Friends indeed. 1807 & Friends, the enterprising six-concert chamber-music series that plays on Mondays at the Academy of Vocal Arts, will present Andrew Rudin's new piano trio, Circadia, at 7:30 p.m. Monday with a good advance buzz. The composer, long a fixture on the local landscape and sometimes described as being from the Alban Berg school of lyrical modernism, reportedly couldn't be happier with what he's hearing. But that's what one would expect with such musicians as pianist Marcantonio Barone, violinist Nancy Bean, and cellist Lloyd Smith. The program also includes Schubert's Piano Trio Op. 99. Information: 215-438-4027 or - David Patrick Stearns

Coming in from the cold. An easily missed chamber music disc here, if only because the cast of characters is so unlikely. The piano quintets of Spanish composers Enrique Granados and Joaquin Turina, written in the late-19th and early-20th centuries, receive an infrequent but charismatic recording by pianist Javier Perianes and the Cuarteto Quiroga on the Harmonia Mundi label that leaves you wondering where this music has been all your life. The jumping-off point feels French in its sensibility, but the melodies, warmth, and all-around extroversion are Spanish. You may even hear guitarlike effects here and there. Also, there's no wrong reason to discover Perianes, one of the most distinctive pianistic voices of his generation. - D.P.S.