diff --git a/src/App.js b/src/App.js
index 4b5d2ae..47cbbf4 100644
--- a/src/App.js
+++ b/src/App.js
@@ -10,7 +10,6 @@ import Settings from './container/Settings'
 import GitHubForkRibbon from 'react-github-fork-ribbon'
 
 import FocusNoteSelector from './container/FocusNoteSelector'
-import ScaleView from './container/ScaleView'
 
 const tuningMap = {
     'Standard E'           : ['E', 'A', 'D', 'G', 'B', 'E'],
diff --git a/src/container/Fretboard.css b/src/container/Fretboard.css
index fe94c82..3022978 100644
--- a/src/container/Fretboard.css
+++ b/src/container/Fretboard.css
@@ -7,4 +7,13 @@
     overflow-y: hidden;
     display: flex;
     flex-direction: column;
+}
+
+.Fretboard-buttons {
+    right: 16px;
+    bottom: 17px;
+    padding: 16px 0 0 0;
+    display: flex;
+    flex-direction: row;
+    justify-content: flex-end;
 }
\ No newline at end of file
diff --git a/src/container/Fretboard.js b/src/container/Fretboard.js
index d7edb3f..31f9194 100644
--- a/src/container/Fretboard.js
+++ b/src/container/Fretboard.js
@@ -10,8 +10,20 @@ import MarkerBoard from '../presentational/MarkerBoard'
 import GuitarString from '../presentational/GuitarString'
 
 class Fretboard extends Component {
+    clearDisabled () {
+        return this.props.selectedNotes.length < 1
+    }
+
     render () {
-        const {tuning, frets, onNoteClick, focusNote, scale} = this.props
+        const {
+            tuning,
+            frets,
+            onClearClick,
+            onNoteClick,
+            focusNote,
+            scale,
+            selectedNotes
+        } = this.props
 
         return (
             <div className="Fretboard">
@@ -20,12 +32,22 @@ class Fretboard extends Component {
                         <GuitarString rootNote={note}
                             frets={frets}
                             scale={scale}
-                            onClick={onNoteClick}
+                            onClick={n => onNoteClick(n, i)}
                             key={i}
+                            string={i}
+                            selectedNotes={selectedNotes}
                             focusNote={focusNote} />
                     )}
                 </div>
                 <MarkerBoard frets={frets}/>
+                <div className='Fretboard-buttons'>
+                    <button
+                        disabled={this.clearDisabled()}
+                        className='button button-outline'
+                        onClick={onClearClick}>
+                        Clear Selected
+                    </button>
+                </div>
             </div>
         )
     }
@@ -33,18 +55,27 @@ class Fretboard extends Component {
 
 const mapStateToProps = (state) => {
     return {
-        tuning   : state.tuning.value,
-        frets    : state.frets,
-        focusNote: state.focusNote,
-        scale    : state.scale
+        tuning       : state.tuning.value,
+        frets        : state.frets,
+        focusNote    : state.focusNote,
+        scale        : state.scale,
+        selectedNotes: state.selectedNotes
     }
 }
 const mapDispatchToProps = (dispatch) => {
     return {
-        onNoteClick (note) {
+        onNoteClick (note, string) {
+            dispatch({
+                type : 'SET_SELECTED_NOTE',
+                value: {
+                    note,
+                    string
+                }
+            })
+        },
+        onClearClick () {
             dispatch({
-                type : 'SET_FOCUS_NOTE',
-                value: note
+                type: 'CLEAR_SELECTED_NOTES'
             })
         }
     }
diff --git a/src/container/ScaleSelector.js b/src/container/ScaleSelector.js
index ea2f2e0..6f8ffd2 100644
--- a/src/container/ScaleSelector.js
+++ b/src/container/ScaleSelector.js
@@ -2,7 +2,6 @@
 import {connect} from 'react-redux'
 import React, {Fragment, Component} from 'react'
 
-import Note, {notes} from '../core/Note'
 import {scales, Scale} from '../core/Scale'
 
 import './ScaleSelector.css'
diff --git a/src/container/Settings.js b/src/container/Settings.js
index c3da7c3..e8fccb0 100644
--- a/src/container/Settings.js
+++ b/src/container/Settings.js
@@ -7,7 +7,6 @@ const Settings = ({handleFretsChange, frets}) =>
         onChange={handleFretsChange}
         value={frets}
         margin="normal"
-        min={27}
         min={12} />
 
 const mapStateToProps = (state) => {
diff --git a/src/container/TuningSelector.js b/src/container/TuningSelector.js
index 3dce298..3802f8e 100644
--- a/src/container/TuningSelector.js
+++ b/src/container/TuningSelector.js
@@ -6,7 +6,7 @@ import './TuningSelector.css'
 
 const TuningSelector = ({tuning, handleTuningChange, tuningOptions}) =>
     <Fragment>
-        <div class="TuningSelector-label">Tuning</div>
+        <div className="TuningSelector-label">Tuning</div>
         <select
             value={tuning.name}
             onChange={handleTuningChange}
diff --git a/src/core/Scale.js b/src/core/Scale.js
index a70e287..83b1c4e 100644
--- a/src/core/Scale.js
+++ b/src/core/Scale.js
@@ -1,5 +1,3 @@
-'use strict'
-
 import Note from './Note'
 import {flatten, reduce} from 'ramda'
 
diff --git a/src/index.js b/src/index.js
index 7fe2a53..97337f0 100644
--- a/src/index.js
+++ b/src/index.js
@@ -8,7 +8,6 @@ import 'normalize.css'
 import 'milligram'
 import './index.css'
 import App from './App'
-import registerServiceWorker from './registerServiceWorker'
 
 import reducers from './reducers/reducers'
 
diff --git a/src/presentational/GuitarString.js b/src/presentational/GuitarString.js
index d4af890..3a9c695 100644
--- a/src/presentational/GuitarString.js
+++ b/src/presentational/GuitarString.js
@@ -40,7 +40,7 @@ class GuitarString extends Component {
   }
 
   render () {
-      const {onClick, focusNote, rootNote, scale} = this.props
+      const {onClick, focusNote, rootNote, scale, string, selectedNotes} = this.props
       return (
           <div className="GuitarString">
               <NutView note={Note(rootNote)} />
@@ -49,6 +49,8 @@ class GuitarString extends Component {
                       onClick={onClick}
                       scale={scale}
                       focusNote={focusNote}
+                      selectedNotes={selectedNotes}
+                      string={string}
                       key={index + note.toString()}/>
               )}
           </div>
diff --git a/src/presentational/NoteView.css b/src/presentational/NoteView.css
index 8083bfb..e6b9821 100644
--- a/src/presentational/NoteView.css
+++ b/src/presentational/NoteView.css
@@ -48,6 +48,10 @@
     background: #aef !important;
 }
 
+.highlight-selected-note {
+    background: salmon !important;
+}
+
 .note {
     cursor: pointer;
     font-size: 10pt;
diff --git a/src/presentational/NoteView.js b/src/presentational/NoteView.js
index ab914ce..dea26a5 100644
--- a/src/presentational/NoteView.js
+++ b/src/presentational/NoteView.js
@@ -2,11 +2,21 @@ import React, {Component} from 'react'
 import './NoteView.css'
 import {Scale} from '../core/Scale'
 
-function getClasses (note, focusNote, scale) {
+function getClasses (note, focusNote, scale, string, selectedNotes) {
     const noteString = note.toString()
 
     let className = 'note'
 
+    if (string !== undefined && selectedNotes) {
+        const notesOnThisString = selectedNotes.filter(x => {
+            return x.string === string && x.note === note.toString()
+        })
+        if (notesOnThisString.length > 0) {
+
+            return `${className} highlight-selected-note`
+        }
+    }
+
     if (noteString === focusNote) {
         return `${className} highlight`
     }
@@ -23,8 +33,8 @@ function getClasses (note, focusNote, scale) {
     return className
 }
 
-const NoteDisplay = ({note, focusNote, onClick, scale}) => (
-    <div className={getClasses(note, focusNote, scale)}
+const NoteDisplay = ({note, focusNote, onClick, scale, string, selectedNotes}) => (
+    <div className={getClasses(note, focusNote, scale, string, selectedNotes)}
         onClick={onClick}>
         {note.toString()}
     </div>
@@ -44,7 +54,7 @@ export default class NoteView extends Component {
     }
 
     render () {
-        const { note, focusNote, scale } = this.props
+        const { note, focusNote, scale, string, selectedNotes } = this.props
         return (
             <div className='NoteView'>
                 <div className='note-area'>
@@ -53,6 +63,8 @@ export default class NoteView extends Component {
                         note={note}
                         scale={scale}
                         focusNote={focusNote}
+                        string={string}
+                        selectedNotes={selectedNotes}
                         onClick={this.handleClick}
                     />
                     <div className='string'></div>
diff --git a/src/reducers/reducers.js b/src/reducers/reducers.js
index 92a4004..007e21c 100644
--- a/src/reducers/reducers.js
+++ b/src/reducers/reducers.js
@@ -19,11 +19,7 @@ function frets (state = loadedFrets, action) {
 function focusNote (state = 'C', action) {
     switch (action.type) {
     case 'SET_FOCUS_NOTE':
-        if (state === action.value) {
-            state = ''
-        } else {
-            state = action.value
-        }
+        state = action.value
         return state
     default:
         return state
@@ -48,11 +44,35 @@ function key (state = '', action) {
     return state
 }
 
+function selectedNotes (state = [], action) {
+    switch (action.type) {
+    case 'SET_SELECTED_NOTE':
+        const {value} = action
+
+        const findExisting = (i) => {
+            return i.note === value.note && i.string === value.string
+        }
+
+        const existingIndex = state.findIndex(findExisting)
+
+        if (existingIndex < 0) {
+            return [...state, value]
+        } else {
+            return state.filter(i => !findExisting(i))
+        }
+    case 'CLEAR_SELECTED_NOTES':
+        return []
+    default:
+        return state
+    }
+}
+
 export default combineReducers({
     focusNote,
     frets,
     key,
     tuningOptions,
     tuning,
-    scale
+    scale,
+    selectedNotes
 })