Keith Jarrett/Gary Peacock/Jack DeJohnette

After a disappointing 1996 disc titled Live from Tokyo, Keith Jarrett’s Standards Trio has released a steady stream of rewarding albums, and it continues with this one. Taped in 2001 and only now seeing the light of day, it shows the trio off in superbly responsive form in a wide variety of songs. As a bonus, Jarrett is in rare form with his trademarked keening moans, which add a strange fourth voice to the trio.

A trio of ragtimes crops up in the middle of the two-disc set as the group gives “Ain’t Misbehavin’,” “Honeysuckle Rose” and “You Took Advantage of Me” the old-timey treatment. It turns out, according to Jarrett’s liner notes, that the musicians felt the audience wasn’t paying attention and drastic measures were called for to force them to focus. It works on disc, too, since ragtime is about the last thing you’d expect to hear from Jarrett, despite a catalog stretching from free jazz to Shostakovich.

On either side of the ragtime interlude, the trio plays bebop (“Oleo”), Monk’s “Straight, No Chaser,” with a daringly complex bass solo from Gary Peacock with Jarrett and Jack DeJohnette remaining silent, and it closes with a touching, rhapsodic performance of Sammy Cahn and Jimmy Van Heusen’s “Only the Lonely.” And the title track? Falling second in the set, it features Jarrett’s most aggressive grunting. But it’s good to have the trio still operating at its accustomed high level, regardless.