Sidechaining is the technique of gating one channel with the envelope of another - doesn't have to be applied to bass guitar+kick drum - its also popular as a technique in synthesis, such as on a 303 acid line, gated by whichever part of the rythmn track is most relevant to the cause, or in eurorack modular context when one module is gated by another through a side chain signal. It is also highly effective when applied to vocals too.
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Sidechaining is the technique of gating one channel with the envelope of another - doesn't have to be applied to bass guitar+kick drum - its also popular as a technique in synthesis, such as on a 303 acid line, gated by whichever part of the rythmn track is most relevant to the cause, or in eurorack modular context when one module is gated by another through a side chain signal. It is also highly effective when applied to vocals too.