Conversation so far:
what can you tell me about Five parts?
Five-piece bands have existed in rock music since the development of the genre.
what does a five piece band entail?
examples of the common vocalist, lead guitar, rhythm guitar, bass, and drums.
what are other examples?
Alternatives include a keyboardist, guitarist, drummer, bassist, and saxophonist.
are there some more examples?
The Sonics, The Dave Clark 5, and Sam the Sham.
what other bands have 5 parts?
Radiohead, The Strokes, The Yardbirds.
how do they differ if at all?
CANNOTANSWER.
what else is interesting about five parts?
).
In some cases, typically in cover bands, one musician plays either rhythm guitar or keyboards.
is the guitar or keyboard appearance dependent on something?
CANNOTANSWER.

Question: are there other instruments that are used?
Self-contained rewrite: Besides the guitar or keyboard, are there other instruments that are used in a rock musical ensemble, five parts?