I've been asked by a friend to record him for a college audition. He plays the upright bass, but also needs me to record piano and acoustic guitar. My question is what microphone would be best for these instruments? I have a Shure SM57...would that be sufficient? If yes, for which instrument or all of the instruments? If not, what mic would be best? I am currently recording on my pc laptop with an mbox 2, using pro tools le 7.4 Thanks!