Did I word it like that? I don't honestly recall (I only dimly remember the discussion). Anyhow, if Kurt Cobain played drums live or in the studio with Nirvana on certain songs, I'd personally list 'drums' on his instruments list. I saw Lavigne play live a few years ago and she was definitely 'playing the drums' on one song (I think there have been others, though I haven't really been following her career recently). There is also a featurette on the DVD that comes with the special edition of Under My Skin where she is seen practising her drumming and discussing how she had decided to learn the instrument.