Whether they’ve got a hot garage band or they’re a violist auditioning for the Philharmonic, a good demo tape (or CD) is essential if they ever want to quit their day job. A gift of recording time at a professional studio might be the boost they need to start playing stadiums instead of weddings. Even if their ambitions are less lofty, a professional-quality recording of their own music is a gift they, and their friends and relatives, will treasure.