diff --git a/src/reskit/soundtrack.rs b/src/reskit/soundtrack.rs
index 6f6c8bf..4c4bdf0 100644
--- a/src/reskit/soundtrack.rs
+++ b/src/reskit/soundtrack.rs
@@ -568,12 +568,13 @@ impl DmfModule {
 
         // (channel, patterns)
         let mut channel_patterns: Vec<Vec<PatternRow>> = Vec::new();
-        for _ in 0..system_total_channels {
+        for channel in 0..system_total_channels {
             let mut channel_rows: Vec<PatternRow> = Vec::new();
             let num_effects = get_u8( bytes.by_ref() )?;
+            println!( "Patterns for Ch. {}", channel );
 
             for _ in 0..patterns_count {
-                for _ in 0..rows_per_pattern {
+                for row_id in 0..rows_per_pattern {
                     let note = get_u16( bytes.by_ref() )?;
                     let octave = get_u16( bytes.by_ref() )?;
 
@@ -616,7 +617,7 @@ impl DmfModule {
                             effects.push(
                                 Effect{
                                     effect_code,
-                                    effect_value: if effect_value != -1 { Some( effect_code ) } else { None }
+                                    effect_value: if effect_value != -1 { Some( effect_value ) } else { None }
                                 }
                             );
                         }
@@ -629,7 +630,10 @@ impl DmfModule {
                         None
                     };
 
-                    channel_rows.push( PatternRow { note, volume, effects, instrument_index } );
+                    let pattern_row = PatternRow { note, volume, effects, instrument_index };
+                    println!( "{}:\t{:?}", row_id, pattern_row );
+
+                    channel_rows.push( pattern_row );
                 }
             }