Do you attribute it to whomever wrote the lyrics, or to who actually sings/speaks them? Or it is simpler/more correct to just use the name of the band/group?
What about a cover song? Can you quote the covering singer/group if you prefer them (for whatever reason), or must it always go back to the original singer/writer/group?
The context is irrelevant (to me); whether I want to use a quoted lyric as something to relate to my personality (yearbook quote, online profile, etc.), or if I needed to include it in something formal (research, presentation, etc.).