Notation is a system of writing music to represent and communicate specific pitches and rhythms.
Music notation indicates the length of tone in relation to other tones in the piece.
Duration is indicated by how the note looks-
Note head & stem
Rests indicate notated silence.
Tied Note Values
Understanding rhythm and duration is extremely important when recording your sequences.
Each part or track needs to be "Quantized" so that it is in time.
Quantizing in sequencing programs is represented as notes or fractions.
Time Signatures In Garage Band
Time Signatures In Reason
On most sequencing programs, the time signature is located in the transport section of the program as pictured above.