Steven Epstein

Will Wynton's omnivorous appetite ever be satisfied? Seemingly enthralled with the string quartets of Bartók, he tries to write one of his own that basically takes off upon Bartók's (and America's Charles Ives') own methods of drawing upon vernacular language to create thoroughly contemporary classical music. While Bartók's inspiration was Hungarian folk music, Marsalis, like Ives, seems to draw upon American fiddle tunes and blues.

'Testament' is Rachel Barton Pine's very personal homage to the music of J. S. Bach, on which she performs the composer's complete Sonatas and Partitas for Solo Violin in the acoustic of her hometown St. Pauls Church in Chicago, where she first heard and fell in love with Bach's music.

The term "concept album" is usually used in connection with rock, but jazz has had its concept albums as well (Charles Mingus' The Black Saint and the Sinner Lady and Miles Davis' Sketches of Spain, for example, are among jazz's most celebrated concept albums). Gladwell is a concept album from jazz guitarist/composer Julian Lage; in the liner notes, Lage explains that he envisioned this 2010 recording as an aural depiction of "an imaginary and forgotten town known as Gladwell." Lage doesn't use any lyrics to depict his fictional town: Gladwell is strictly instrumental. And Lage, who is heard on both acoustic and electric guitar, is appealingly melodic on his own compositions (which dominate Gladwell), as well as a performance of the standard "Autumn Leaves." As a guitarist, Lage favors an airy sound along the lines of Pat Metheny and Jim Hall, and as a composer, his influences range from Metheny to Oregon to Weather Report.

The informal title says a great deal about the contents of The Mozart Sessions, which could have been called Concerti for Piano and Orchestra, Nos. 23 and 20, since that is, for the most part, what it is. But of course the conductors, vocalist Bobby McFerrin and jazz keyboard player Chick Corea, are not your average classical musicians. Nor is there any doubt about the non-traditional nature of the recording, when it starts with McFerrin's patented improvisational vocals followed by Corea's piano inventions under the title "Prelude."