failing multi chord test from file

src/main.rs

@@ -1,6 +1,7 @@
 use itertools::Itertools;
 
 mod flags;
+mod play;
 mod seq;
 mod syn;
 mod tone;
@@ -16,8 +17,12 @@ fn main() {
         flags.sound_font,
         flags.sample_rate,
     ));
-    for i in 0..flags.play.len() {
-        syn_seq.append(i as i32, flags.play[i].clone());
+    let mut i = 0;
+    for p in flags.play.iter() {
+        for p in play::new(p.clone()) {
+            syn_seq.append(i as i32, p);
+            i += 1;
+        }
     }
 
     play(syn_seq, flags.sample_rate, flags.bpm);