Last week, flutist Bonita Boyd came to WXXI to perform on a live, in-studio show, Backstage Pass. To promote her appearance, I pulled out her excellent CD of Niccolo Paganini’s 24 Caprices, Op. 1, a set of mind-bogglingly difficult violin solos Boyd plays deftly on the flute. Looking at the CD cover, I wondered, what’s with the old car? The expanse of leg? The sexy smile? Paganini, a randy charmer, would most heartily approve.