diff --git a/src/flags.rs b/src/flags.rs
index d2bcef1..66463b4 100644
--- a/src/flags.rs
+++ b/src/flags.rs
@@ -5,9 +5,12 @@ pub struct Flags {
     #[arg(short, long, default_value_t = false)] 
     pub debug: bool,
 
-    #[arg(long, default_value_t = 4)] 
+    #[arg(long, default_value_t = 16)] 
     pub smallest_note: usize,
 
+    #[arg(long, default_value_t = 60)] 
+    pub bpm: usize,
+
     #[arg(long, default_value_t = 44100)] 
     pub sample_rate: usize,
 
diff --git a/src/main.rs b/src/main.rs
index 5bc50b3..53d2533 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -16,7 +16,7 @@ fn main() {
     let params = OutputDeviceParameters {
         channels_count: 2,
         sample_rate: flags.sample_rate,
-        channel_sample_count: flags.sample_rate / flags.smallest_note,
+        channel_sample_count: flags.sample_rate / flags.bpm * 60 / flags.smallest_note, 
     };
 
     // Play some notes (middle C, E, G). // 16 channels actually // 60=c 64=e 67=g //up to 128velocity though dont go below 50 tbh // 12 notes per octave
diff --git a/src/syn.rs b/src/syn.rs
index a292c96..e190428 100644
--- a/src/syn.rs
+++ b/src/syn.rs
@@ -5,14 +5,17 @@ use std::sync::Arc;
 
 pub enum Syn {
     Real(Synthesizer),
-    Text(std::collections::HashMap<i32, std::collections::HashMap<i32, i32>>),
+    Text{
+       m: std::collections::HashMap<i32, std::collections::HashMap<i32, i32>>,
+       i: u32,
+    },
 }
 
 impl Syn {
     pub fn new(debug: bool, sound_font: String, sample_rate: usize) -> Syn {
         match debug {
             false => Syn::new_real(sound_font, sample_rate),
-            true => Syn::Text(std::collections::HashMap::new()),
+            true => Syn::Text{m: std::collections::HashMap::new(), i: 0},
         }
     }
 
@@ -29,7 +32,7 @@ impl Syn {
     pub fn note_on(&mut self, a: i32, b: i32, c: i32) {
         match self {
             Syn::Real(syn) => syn.note_on(a, b, c),
-            Syn::Text(m) => {
+            Syn::Text{m, ..} => {
                 eprintln!("note_on({:?}, {:?}, {:?})", a, b, c);
                 match m.get_mut(&a) {
                     Some(m2) => { m2.insert(b, c); },
@@ -46,7 +49,7 @@ impl Syn {
     pub fn note_off(&mut self, a: i32, b: i32) {
         match self {
             Syn::Real(syn) => syn.note_off(a, b),
-            Syn::Text(m) => {
+            Syn::Text{m, ..} => {
                 eprintln!("note_off({:?}, {:?})", a, b);
                 match m.get_mut(&a) {
                     Some(m) => { m.remove(&b); },
@@ -60,8 +63,9 @@ impl Syn {
     pub fn render(&mut self, a: &mut [f32], b: &mut [f32]) {
         match self {
             Syn::Real(syn) => syn.render(a, b),
-            Syn::Text(m) => {
-                eprintln!("render({:?})", m)
+            Syn::Text{m, i} => {
+                eprintln!("render[{}]({:?})", i, m);
+                *i += 1;
             },
         };
     }