diff --git a/tracker/patterns.go b/tracker/patterns.go
index 7ee3c2f..4276d70 100644
--- a/tracker/patterns.go
+++ b/tracker/patterns.go
@@ -54,3 +54,10 @@ func (t *Tracker) layoutPatterns(tracks []sointu.Track, activeTrack, cursorPatte
 		return layout.Dimensions{Size: gtx.Constraints.Max}
 	}
 }
+
+func patternIndexToString(index byte) string {
+	if index < 10 {
+		return string([]byte{'0' + index})
+	}
+	return string([]byte{'A' + index - 10})
+}
diff --git a/tracker/theme.go b/tracker/theme.go
index 6d0f069..a3bc00e 100644
--- a/tracker/theme.go
+++ b/tracker/theme.go
@@ -15,6 +15,7 @@ var neutral = color.RGBA{R: 73, G: 117, B: 130, A: 255}
 var light = color.RGBA{R: 138, G: 219, B: 243, A: 255}
 var dark = color.RGBA{R: 24, G: 40, B: 44, A: 255}
 var white = color.RGBA{R: 255, G: 255, B: 255, A: 255}
+var blue = color.RGBA{R: 127, G: 127, B: 255, A: 255}
 var gray = color.RGBA{R: 127, G: 127, B: 127, A: 255}
 var black = color.RGBA{R: 0, G: 0, B: 0, A: 255}
 var yellow = color.RGBA{R: 255, G: 255, B: 130, A: 255}
@@ -36,6 +37,7 @@ var trackerInactiveTextColor = gray
 var trackerTextColor = white
 var trackerActiveTextColor = yellow
 var trackerPlayColor = red
+var trackerPatMarker = blue
 
 var patternBgColor = black
 var patternPlayColor = red
diff --git a/tracker/track.go b/tracker/track.go
index b916d32..028af19 100644
--- a/tracker/track.go
+++ b/tracker/track.go
@@ -14,7 +14,8 @@ import (
 )
 
 const trackRowHeight = 16
-const trackWidth = 100
+const trackWidth = 84
+const patmarkWidth = 16
 
 func (t *Tracker) layoutTrack(patterns [][]byte, sequence []byte, active bool, cursorRow, cursorPattern, cursorCol, playRow, playPattern int) layout.Widget {
 	return func(gtx layout.Context) layout.Dimensions {
@@ -55,6 +56,10 @@ func (t *Tracker) layoutTrack(patterns [][]byte, sequence []byte, active bool, c
 				if songRow == playSongRow {
 					paint.FillShape(gtx.Ops, trackerPlayColor, clip.Rect{Max: image.Pt(trackWidth, trackRowHeight)}.Op())
 				}
+				if j == 0 {
+					paint.ColorOp{Color: trackerPatMarker}.Add(gtx.Ops)
+					widget.Label{}.Layout(gtx, textShaper, trackerFont, trackerFontSize, patternIndexToString(s))
+				}
 				if songRow == cursorSongRow {
 					paint.ColorOp{Color: trackerActiveTextColor}.Add(gtx.Ops)
 				} else {
@@ -64,10 +69,11 @@ func (t *Tracker) layoutTrack(patterns [][]byte, sequence []byte, active bool, c
 						paint.ColorOp{Color: trackerInactiveTextColor}.Add(gtx.Ops)
 					}
 				}
+				op.Offset(f32.Pt(patmarkWidth, 0)).Add(gtx.Ops)
 				widget.Label{}.Layout(gtx, textShaper, trackerFont, trackerFontSize, valueAsNote(c))
 				op.Offset(f32.Pt(trackWidth/2, 0)).Add(gtx.Ops)
 				widget.Label{}.Layout(gtx, textShaper, trackerFont, trackerFontSize, strings.ToUpper(fmt.Sprintf("%02x", c)))
-				op.Offset(f32.Pt(-trackWidth/2, trackRowHeight)).Add(gtx.Ops)
+				op.Offset(f32.Pt(-trackWidth/2-patmarkWidth, trackRowHeight)).Add(gtx.Ops)
 			}
 		}
 		return layout.Dimensions{Size: gtx.Constraints.Max}