diff --git a/static/abc/index.html b/static/abc/index.html
index ba454a6..85e6c45 100644
--- a/static/abc/index.html
+++ b/static/abc/index.html
@@ -10,7 +10,7 @@
 <button onclick="
 A=new AudioContext();
 // tempo
-r=.4
+r=.4;
 // play note with pitch and duration
 p=(h,t,u)=>{
   a=A.createOscillator();
@@ -20,7 +20,7 @@ p=(h,t,u)=>{
   a.stop(u*r);
 };
 // read text from input
-f=f.value||window.location.search;
+v=f.value||window.location.search;f.value=v;
 for(i=t=o=m=0,l=1;c=f[i++],d=f[i];){
   // https://chriskallen.com/zzt/zztoop.php#sound
   // look-ahead for accidentals
diff --git a/static/abc/min.html b/static/abc/min.html
index de199c6..5cf237c 100644
--- a/static/abc/min.html
+++ b/static/abc/min.html
@@ -1 +1 @@
-<textarea id="f"></textarea><p><button onclick="A=new AudioContext();r=.4;p=(h,t,u)=>{a=A.createOscillator();a.connect(A.destination);a.frequency.value=h;a.start(t*r);a.stop(u*r);};for(i=t=o=m=0,l=1;c=f.value[i++],d=f.value[i];){m=d=='#'?1:d=='!'?-1:0;s=n=>()=>p(440*Math.pow(2,(n+m+o)/12),t,t+=l);q=n=>()=>l=n;x=()=>t+=l;g=[s(-9),s(-7),s(-5),s(-4),s(-2),s(0),s(2),()=>o-=12,()=>o+=12,q(4),q(2),q(1),q(.5),q(.25),q(.125),q(l/3),q(l*1.5),()=>(o=0,l=.125),x,x,x,x,x,x,x,x,x,x,]['cdefgab-+whqist3.@x012456789'.indexOf(c.toLowerCase())];g&&g();}">#play</button>
\ No newline at end of file
+<textarea id="f"></textarea><br><button onclick="A=new AudioContext();r=.4;p=(h,t,u)=>{a=A.createOscillator();a.connect(A.destination);a.frequency.value=h;a.start(t*r);a.stop(u*r);};v=f.value||window.location.search;f.value=v;for(i=t=o=m=0,l=1;c=f[i++],d=f[i];){m=d=='#'?1:d=='!'?-1:0;s=n=>()=>p(440*Math.pow(2,(n+m+o)/12),t,t+=l);q=n=>()=>l=n;x=()=>t+=l;g=[s(-9),s(-7),s(-5),s(-4),s(-2),s(0),s(2),()=>o-=12,()=>o+=12,q(4),q(2),q(1),q(.5),q(.25),q(.125),q(l/3),q(l*1.5),()=>(o=0,l=.125),x,x,x,x,x,x,x,x,x,x,]['cdefgab-+whqist3.@x012456789'.indexOf(c.toLowerCase())];g&&g();}">#play</button>
\ No newline at end of file
diff --git a/static/abc/min.txt b/static/abc/min.txt
index 9e55a80..29513eb 100644
--- a/static/abc/min.txt
+++ b/static/abc/min.txt
@@ -1 +1 @@
-data:text/html;base64,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
\ No newline at end of file
+data:text/html;base64,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