
Crotchet
Music Length
Crotchet indicates the time a note should be held in music, not the pitch or loudness. 
Beat Unit
In 4/4 time, a crotchet matches the beat the metronome clicks—each click is one crotchet. 
Music Sheets
On sheet music, a crotchet is noted with a filled-in oval note head and a straight stem. 