Rachel Barton Pine spoke to me in January about her new Mozart concerto set - and since then it has earned great reviews and been chosen as one of our $15/month pledge premiums. The Telegraph said that Rachel's playing reveals "subtleties alongside the grace and exuberance that render the music endlessly fascinating and appealing"; it also praised the "ever-stylish" Sir Neville Marriner and his Academy of St. Martin in the Fields who are "ideally matched to the music." Gramophone called Rachel's playing "sensitive and finely honed" and noted that Marriner has conducted "more Mozart than anyone alive." Also since January, the young Chicago-based violist Matthew Lipman, who joins Rachel for the great SinfoniaConcertante, has won the highly prestigious Avery Fischer Career Grant. Below is Rachel telling me about her Mozart: Why (and how) does she write all her own cadenzas? Why does she like to play all five concertos in a single concert? And how does that practice relate to the birth of her son? Over to Rachel: