diff --git a/.github/makecode/blocks.png b/.github/makecode/blocks.png
index f3b05d8..bb81757 100644
Binary files a/.github/makecode/blocks.png and b/.github/makecode/blocks.png differ
diff --git a/.github/makecode/blocksdiff.png b/.github/makecode/blocksdiff.png
index 03ba5b0..1cd8632 100644
Binary files a/.github/makecode/blocksdiff.png and b/.github/makecode/blocksdiff.png differ
diff --git a/main.blocks b/main.blocks
index 581174e..d4ab660 100644
--- a/main.blocks
+++ b/main.blocks
@@ -10,7 +10,7 @@
         . . # . . 
         . . . . . 
         . . . . .
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id="=!J`sM2DdI}{LHjdPL72">x</field></block></value><value name="B"><shadow type="math_number" id="Hu,P#M$GFL=H/iThM9Q*"><field name="NUM">2</field></shadow></value></block></value><value name="limit"><shadow type="math_number"><field name="NUM">4</field></shadow><block type="math_arithmetic" id="mI}8h3I:qoo)=roBz9,x"><field name="OP">MINUS</field><value name="A"><shadow type="math_number"><field name="NUM">0</field></shadow><block type="variables_get" id="9-pi-)UygFTy#$^_gr+,"><field name="VAR" id="=!J`sM2DdI}{LHjdPL72">x</field></block></value><value name="B"><shadow type="math_number" id="w[TIhE{B}bqtjdW!szMq"><field name="NUM">2</field></shadow></value></block></value></block></value><next><block type="variables_set" id="[pqr7jF8W.VMzn_L))q*"><field name="VAR" id="xmYsDBRkO`xjqHF+daE{">iy</field><value name="VALUE"><shadow type="math_number" id="sWxH57}r(dGNc%T}8X(z"><field name="NUM">0</field></shadow><block type="device_random" id="U*$3|-r!4A_Wzv%G~9^0"><value name="min"><shadow type="math_number" id="uz:ZP{ty%BtSDRkwdfvP"><field name="NUM">0</field></shadow><block type="math_arithmetic" id="kl-L-?xVnTlFl`~@qMfE"><field name="OP">ADD</field><value name="A"><shadow type="math_number" id="OndGvTv$A~EGZBc5kQNz"><field name="NUM">0</field></shadow><block type="variables_get" id=";$adWgct2otGHT1Gg7#r"><field name="VAR" id="W6/HEH{VIUP`#2hzOt?e">y</field></block></value><value name="B"><shadow type="math_number" id="-0Ef3d/*kd.C5f0}WdOu"><field name="NUM">1</field></shadow></value></block></value><value name="limit"><shadow type="math_number" id="@T;ZNZq2WKbi%x6[S/X4"><field name="NUM">4</field></shadow><block type="math_arithmetic" id="alOVFYhKvi^@}N)*!p8I"><field name="OP">MINUS</field><value name="A"><shadow type="math_number"><field name="NUM">0</field></shadow><block type="variables_get" id="ze}v(+c$d^j`HwC=yIKD"><field name="VAR" id="W6/HEH{VIUP`#2hzOt?e">y</field></block></value><value name="B"><shadow type="math_number" id="8!xn!5)9W1Nv38oSsccC"><field name="NUM">1</field></shadow></value></block></value></block></value></block></next></block></statement><statement name="ELSE"><block type="variables_change" id="c]3;Q:X0])b{dE)cTx@r"><field name="VAR" id="tlxr+~z(tbi|o)^5|1jG">ix</field><value name="VALUE"><shadow type="math_number" id="}RG[4{K+,y(Xkl22@wN+"><field name="NUM">1</field></shadow><block type="device_random" id="5XQ]j#Oxn-If*QBnd9Fn"><value name="min"><shadow type="math_number" id="@G#Q+Wn(6cFU!]%uebI3"><field name="NUM">-1</field></shadow></value><value name="limit"><shadow type="math_number" id="nR9Su|I?1XGz=O@1Eb|6"><field name="NUM">1</field></shadow></value></block></value><next><block type="variables_change" id="uU9-R_e/|O}t@DhKY/a-"><field name="VAR" id="xmYsDBRkO`xjqHF+daE{">iy</field><value name="VALUE"><shadow type="math_number" id="aVRt%Ykv[lujL^(c9]M*"><field name="NUM">1</field></shadow><block type="device_random" id="dLry5]3lYPq_`0?j@S,a"><value name="min"><shadow type="math_number" id=".IV*$HkoAho;{osFIrE#"><field name="NUM">-1</field></shadow></value><value name="limit"><shadow type="math_number" id="R70kEHl,r.^aWN/W.0kB"><field name="NUM">1</field></shadow></value></block></value></block></next></block></statement><next><block type="controls_if" id=",3#/p:M#HuQ~shLuPc.z"><value name="IF0"><shadow type="logic_boolean"><field name="BOOL">TRUE</field></shadow><block type="logic_compare" id="oU]|/#$b]-5}lGDx-oTC"><field name="OP">LT</field><value name="A"><shadow type="math_number"><field name="NUM">0</field></shadow><block type="variables_get" id="N,X6TR99wbu)R|`MBk5`"><field name="VAR" id="tlxr+~z(tbi|o)^5|1jG">ix</field></block></value><value name="B"><shadow type="math_number" id="xB[W8C[i0+QOSfsC:;G3"><field name="NUM">0</field></shadow></value></block></value><statement name="DO0"><block type="variables_set" id="Br+~D[J[hH:iU}Ex:_]0"><field name="VAR" id="tlxr+~z(tbi|o)^5|1jG">ix</field><value name="VALUE"><shadow type="math_number" id="xuswtU,j7!u[Ox-RAk^s"><field name="NUM">0</field></shadow></value></block></statement><next><block type="controls_if" id="AkiWrjy*4yjUd,uxf-=-"><value name="IF0"><shadow type="logic_boolean"><field name="BOOL">TRUE</field></shadow><block type="logic_compare" id="A|P{ysC,{y=JGDCaHeyM"><field name="OP">LT</field><value name="A"><shadow type="math_number"><field name="NUM">0</field></shadow><block type="variables_get" id="a$xg.5R]U;/l7~Xh}K;b"><field name="VAR" id="xmYsDBRkO`xjqHF+daE{">iy</field></block></value><value name="B"><shadow type="math_number" id="Fcrj(;M{l.FNsmVvd02]"><field name="NUM">0</field></shadow></value></block></value><statement name="DO0"><block type="variables_set" id="`yAa+]8VHP2S7kEuLRbo"><field name="VAR" id="xmYsDBRkO`xjqHF+daE{">iy</field><value name="VALUE"><shadow type="math_number" id="o{bN~KnR)~/tGhMvRqkF"><field name="NUM">0</field></shadow></value></block></statement><next><block type="controls_if" id="4LEO=TCS*.*58W,%BKk("><value name="IF0"><shadow type="logic_boolean"><field name="BOOL">TRUE</field></shadow><block type="logic_compare" id="Hpmh)q4l1EU]RPx{qu6,"><field name="OP">GT</field><value name="A"><shadow type="math_number"><field name="NUM">0</field></shadow><block type="variables_get" id=")yxq00CSuSLGK]f-0V!@"><field name="VAR" id="tlxr+~z(tbi|o)^5|1jG">ix</field></block></value><value name="B"><shadow type="math_number" id="u%8r7koR/]*~{F@lgdhZ"><field name="NUM">4</field></shadow></value></block></value><statement name="DO0"><block type="variables_set" id="[MmW@u8*XR[9qP~B#T6="><field name="VAR" id="tlxr+~z(tbi|o)^5|1jG">ix</field><value name="VALUE"><shadow type="math_number" id="b`6n]%ZK-gZq=0MlSZY1"><field name="NUM">4</field></shadow></value></block></statement><next><block type="controls_if" id="%|IUwwpa5t#BnHcuE199"><value name="IF0"><shadow type="logic_boolean"><field name="BOOL">TRUE</field></shadow><block type="logic_compare" id="bK;}EeG~SPwzVcUoRlIM"><field name="OP">GT</field><value name="A"><shadow type="math_number"><field name="NUM">0</field></shadow><block type="variables_get" id="yKlR+zrHZ{y`FhNi#50r"><field name="VAR" id="xmYsDBRkO`xjqHF+daE{">iy</field></block></value><value name="B"><shadow type="math_number" id=";!6:Q]d6;O):XK%2]I:K"><field name="NUM">4</field></shadow></value></block></value><statement name="DO0"><block type="variables_set" id="`J92HK9F-Z)[,8VSta%P"><field name="VAR" id="xmYsDBRkO`xjqHF+daE{">iy</field><value name="VALUE"><shadow type="math_number" id="M3/|65i|aG|TAk$eU7lg"><field name="NUM">4</field></shadow></value></block></statement><next><block type="device_plot_brightness" id="F#w:e;0BsQhmc`Zk2[u:"><value name="x"><shadow type="math_number_minmax" id="*pgWs!sJ|?-HM%6)}nS|"><mutation min="0" max="4" label="X" precision="1"/><field name="SLIDER">0</field></shadow><block type="variables_get" id="/+3A[P]q[m83m5d,/Kgs"><field name="VAR" id="tlxr+~z(tbi|o)^5|1jG">ix</field></block></value><value name="y"><shadow type="math_number_minmax" id="h)|v:?a!B{)[pe)-[]}V"><mutation min="0" max="4" label="Y" precision="1"/><field name="SLIDER">0</field></shadow><block type="variables_get" id="+b-1l*`9|TE/DZ!bqG2]"><field name="VAR" id="xmYsDBRkO`xjqHF+daE{">iy</field></block></value><value name="brightness"><shadow type="math_number_minmax" id=";|sBe13r1R^=+Br%SEGk"><mutation min="0" max="255" label="Brightness" precision="0"/><field name="SLIDER">32</field></shadow></value></block></next></block></next></block></next></block></next></block></next></block></next></block></statement></block><block type="pxt-on-start" id="aK.OPXk.,l7Ll9XOwPnz" x="0" y="0"><statement name="HANDLER"><block type="device_start_melody" id="=L3zuU[W@Wfy?Q]s0dY2"><field name="options">MelodyOptions.OnceInBackground</field><value name="melody"><block type="device_builtin_melody" id="+6Bk`8[C#v+DLPB.M-V@"><field name="melody">Melodies.Nyan</field></block></value><next><block type="device_show_leds" id="Lf9#FT1{MBV,u.xaL5aM"><field name="LEDS">`
         # # # # # 
         . . . . . 
         . . . . . 
diff --git a/main.ts b/main.ts
index b9af57b..eb7ac6a 100644
--- a/main.ts
+++ b/main.ts
@@ -15,7 +15,7 @@ let iy = 0
 let ix = 0
 let y = 0
 let x = 0
-music.startMelody(music.builtInMelody(Melodies.Nyan), MelodyOptions.ForeverInBackground)
+music.startMelody(music.builtInMelody(Melodies.Nyan), MelodyOptions.OnceInBackground)
 basic.showLeds(`
     # # # # #
     . . . . .