William Gillock was a US pianist and composer. He was born in Missouri in 1917, and died in Texas in 1993. Gillock worked as a teacher and adjudicator in New Orleans and Dallas.

His compositions are attractive and accessible, and make use of classical, jazz and contemporary techniques.

The constant bass uses a steady crochet rhythm in the left hand. This is a common feature of jazz music, and is sometimes called a "walking" bass.

Four crotchet beats in a bar (simple quadruple time).

An incomplete bar at the start of the piece.

Inidcates three notes, or notes and rests, played in the time of two. It is customary to play the paired quavers unevenly in this style of music; dotted quaver and semiqaver groups may also be played in this swing rhythm.

C major, there is no modulation - the added sharps and flats give the piece a "jazzy" sound, without changing the key.

Means that the suggested tempo is 132 crotchet beats per minute.

Indicates an accent, which means emphasised.

Means continue in a similar manner (referring to the staccato signs).

Decrescendo, means gradually becoming softer.

Ottava, means play an octave higher than written.

Ottava bassa, means play an octave lower than written.

The constant bass is in ternary (ABA) form, with a coda. Section A and Section B each contain 12 bars, resembling a "12 bar blues" chord progression.

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Constant Bass

Term	Definition
Composer1	William Gillock was a US pianist and composer. He was born in Missouri in 1917, and died in Texas in 1993. Gillock worked as a teacher and adjudicator in New Orleans and Dallas.
Composer2	His compositions are attractive and accessible, and make use of classical, jazz and contemporary techniques.
Title	The constant bass uses a steady crochet rhythm in the left hand. This is a common feature of jazz music, and is sometimes called a "walking" bass.
Time Signature	Four crotchet beats in a bar (simple quadruple time).
anacrusis	An incomplete bar at the start of the piece.
triplet	Inidcates three notes, or notes and rests, played in the time of two. It is customary to play the paired quavers unevenly in this style of music; dotted quaver and semiqaver groups may also be played in this swing rhythm.
Key	C major, there is no modulation - the added sharps and flats give the piece a "jazzy" sound, without changing the key.
♩ = 132	Means that the suggested tempo is 132 crotchet beats per minute.
>	Indicates an accent, which means emphasised.
simile	Means continue in a similar manner (referring to the staccato signs).
decresc.	Decrescendo, means gradually becoming softer.
8va	Ottava, means play an octave higher than written.
8ba	Ottava bassa, means play an octave lower than written.
Analysis	The constant bass is in ternary (ABA) form, with a coda. Section A and Section B each contain 12 bars, resembling a "12 bar blues" chord progression.

Created by: knmangalath

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