Conversation so far:
What can you tell me about a Musical ensemble five-part?
Five-piece bands have existed in rock music since the development of the genre.
What does a five-piece band entail?
The lineup of a five part band entails the common vocalist, lead guitar, rhythm guitar, bass, and drums.
What are examples of a five-piece band?
The Beach Boys, The Rolling Stones, Aerosmith, Def Leppard are five-piece bands in rock music.
Are there more examples of five-piece bands besides The Beach Boys, The Rolling Stones, Aerosmith, and Def Leppard?
AC/DC, Oasis, Pearl Jam, Guns N' Roses, Radiohead are five-piece bands.
What other bands have five parts besides AC/DC, Oasis, Pearl Jam, Guns N' Roses, and Radiohead?
In addition, The Strokes, The Yardbirds, 311 and The Hives  are five-piece bands.
How do five-piece bands differ if at all?
An alternative to the five-member lineup replaces the rhythm guitarist with a keyboard–synthesizer player or with a turntablist such as Deftones, Hed PE, Incubus or Limp Bizkit.
What else is interesting about a five-piece band besides an alternative replacement of a keyboard-synthesizer player?
Alternatives include a keyboardist, guitarist, drummer, bassist, and saxophonist, such as The Sonics, The Dave Clark 5, and Sam the Sham and the Pharaohs.

Question: is the guitar or keyboard appearance dependent on something?
Self-contained rewrite: Is the guitar or keyboard appearance of a five-piece band dependent on something?