What is the meaning of subing instrument?

Subbing instrument, in the context of music, refers to the practice of using a different instrument to play a part originally written for another instrument. This is commonly done in music arrangements, orchestrations, and performances when the desired instrument is unavailable, or when a specific sound or effect is sought after.

Here are a few examples of subbing instruments:

1. Using a keyboard to play a violin part: In certain arrangements or performances, a keyboard (such as a piano or synthesizer) may be used to play the notes originally written for a violin. This substitution can be made to add a different timbre, texture, or musical color to the piece.

2. Substituting a clarinet for a saxophone: In jazz or big band music, a clarinet may be used to replace a saxophone part when the saxophone player is unavailable or when the arranger wants a brighter, reedier sound.

3. Using a guitar to play a bass guitar part: In some recordings or live performances, a guitarist might play the bass guitar part using specific techniques or effects pedals to achieve a bass-like sound from the guitar.

4. Substituting a synthesizer for a traditional orchestral instrument: In modern film scores, orchestral parts may be substituted with synthesized sounds to create unique or futuristic textures and atmospheres.

Subbing instruments is a common technique in music production, allowing musicians, arrangers, and producers to adapt and enhance the sound and instrumentation of a piece according to their creative vision and practical circumstances.