Standard durations give you whole, half, quarter, eighth, and sixteenth notes. But music doesn't always fit into those neat boxes - just as recipes don't always call for exactly one cup or one teaspoon. Dotted notes and ties let you create durations that sit between the standard sizes - bridging the gaps to express exactly the rhythm you want.
Dotted notes
A dot after a note adds half of its own value to its duration. A dotted quarter note lasts 1.5 beats (1 beat + half a beat). A dotted half note lasts 3 beats (2 + 1). Think of the dot as saying "plus 50%" - an extra half-portion on the serving.
Dotted note durations
Half (2 beats) + quarter (1 beat) = 3 beats
Quarter (1 beat) + eighth (½ beat) = 1.5 beats
Eighth (½ beat) + sixteenth (¼ beat) = 0.75 beats
The formula: Dotted duration = original duration x 1.5. If the original is 1 beat, dotted = 1.5 beats. If original is 2 beats, dotted = 3 beats.
Double-dotted notes
A second dot adds half the value of the first dot. A double-dotted quarter note lasts 1.75 beats (1 + 0.5 + 0.25). These are rare in most popular music but show up in classical and film scores.
In production, you'd usually just set the exact length in the piano roll rather than thinking in dots. The concept matters more for reading sheet music than for writing in a DAW.
Ties: connecting notes
A tie is a curved line connecting two notes of the same pitch. The second note doesn't sound separately - instead, the first note just sustains for the combined duration. It's like merging two notes into one longer note.
Tied notes across a bar line
Half note tied to quarter note = 3 beats total, crossing the bar line
Why not just use a longer note?
Ties exist because some durations can't be written any other way:
Crossing bar lines
A note that starts on beat 3 and lasts 4 beats goes into the next bar. You can't write that as a single note - you tie across the bar line.
Unusual durations
Want a note that lasts 5 beats? Tie a whole note (4) to a quarter note (1). No single note symbol means "5 beats".
Rhythmic clarity
Even when a longer note would fit, ties can make the beat structure clearer to read.
Tie vs slur: Ties connect notes of the same pitch and merge them into one. Slurs connect notes of different pitches and mean "play smoothly". They look similar but do different things. In MIDI, ties = one long note; slurs = legato articulation.
In the piano roll
Good news: in a DAW piano roll, you don't need to think about ties. You just drag a note to whatever length you want - even across bar lines. Ties are a notation concept. When reading sheet music or discussing rhythm, they matter. When drawing MIDI, just size the note block.
Dotted notes, however, are useful vocabulary. If someone says "use a dotted quarter note rhythm," you know they mean 1.5-beat notes - which creates a distinctive bouncy feel common in many genres.
Key takeaway
A dot adds 50% to a note's duration (dotted quarter = 1.5 beats). Ties merge two same-pitch notes into one longer note, letting you create any duration or cross bar lines. In a piano roll, just drag to length - but knowing the vocabulary helps you communicate rhythm.
Next: rests - the silent notes that shape rhythm just as much as the sounding ones.
Generate rhythms and grooves
Starts builds drum patterns and rhythmic parts with proper timing, velocity, and groove.