Whole note

A whole note (American) or semibreve (British) in musical notation is a single note equivalent to or lasting as long as two half-notes or four quarter-notes.

Figure 1. A whole note and a whole rest.
Comparison of duple note values ( = 2×, etc.)
Drum pattern, s on bass and snare,
accompanied by ride patterns of various
duple lengths from to 128th (all at =60)
1 2 4 8
16 32 64 128