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In popular music, half time is a type of meter and tempo that alters the rhythmic feel by essentially ''doubling the tempo resolution'' or metric division. Thus 4/4 approximates 8/8. It is not to be confused with ''alla breve'' or odd time. Though notes usually get the same value relative to the tempo, the way the beats are divided is altered. While much music typically has a backbeat on quarter note (crotchet) beats two and four, half time would increase the interval between backbeats to double, thus making it hit on beats three and seven (counted out of an 8 beat measure (), common practice in half time): 1 2 3 4 1 2 3 4 1 2 3 4 5 6 7 8 1 2 3 4 Essentially, a half time 'groove' is one that expands one measure over the course of two. A classic example is the half time shuffle, a variation of a shuffle rhythm, which is used extensively in hip-hop and some blues music. Some of the variations of the basic groove are notoriously difficult to play on drum set. It is also a favorite in some pop and rock tunes. Some classic examples are the Purdie Shuffle by Bernard Purdie which appears in "Home At Last" and "Babylon Sisters", both of which are Steely Dan songs.〔. Accessed 31 July 2014.〕 "Fool in the Rain" by Led Zeppelin uses a derivation of the Purdie Shuffle, and Jeff Porcaro of Toto created a hybridization of the Zeppelin and Purdie shuffles called the Rosanna shuffle for the track "Rosanna".〔 It is important to realize that while in half time, the ''feel'' of notes are chopped in half, but the actual time ''value'' remains the same. For example, at the same tempo, 8th notes (quavers) would sound like 16ths (semiquavers). In the case of the half time shuffle, triplets sound like 16th note (semiquaver) triplets, etc. By preserving the tempo, the beat is stretched by 2x. ==See also== *Double-time *Drum pattern 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Half-time (music)」の詳細全文を読む スポンサード リンク
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