Double whole note the "brevis" was to be considered the unit of time ("tactus"), instead of the usual "semibrevis". The old symbol , used as an alternative to the numerical proportion 2:1 in mensural notation, is carried over into modern notational practice to indicate a smaller relative value per note shape. It is normally used for music in a relatively quick tempo, where it indicates two minim (half note) beats in a bar of four crotchets (quarter notes), while is the equivalent of , with four crotchet beats . Double whole note In music, a double whole note (American), breve (international), or double
Four on the floor (music) Four on the floor (music) Four-on-the-floor (or four-to-the-floor) is a rhythm pattern used primarily in disco and electronic dance music. It is a steady, uniformly accented beat in 4/4 time in which the bass drum is hit on every beat (1, 2, 3, 4) in common time. This was popularized in the disco music of the 1970s and the term "four-on-the-floor" was widely used in that era: it originated with the pedal-operated, drum-kit bass drum. Earl Young is seen as the inventor of the disco style of rock drumming (in Harold Melvin & The Blue Notes's "The Love I Lost"