DARIUS JONES TRIO (Saturday) Darius Jones has the capacity for a proud, rafters-raising tone on alto saxophone, and as an improviser he’s fearless but disciplined. Late last year he released “Man’ish Boy (A Raw & Beautiful Thing)” (AUM Fidelity), a serious debut featuring his pianoless trio, which he leads here. At 9 p.m., Tea Lounge, 837 Union Street, near Sixth Avenue, Park Slope, Brooklyn , (718) 789-2762, tealoungeny.com; suggested donation, $5. (Chinen)20100218
KNEEBODY (Friday and Saturday) Kneebody, a quick-change electro-acoustic ensemble, recently enjoyed an uncommon bit of recognition: a Grammy nomination for best classical crossover album, for “Twelve Songs by Charles Ives” (Winter & Winter), featuring the vocalist Theo Bleckmann. (Yo-Yo Ma ended up winning.) This weekend the band performs not only with Mr. Bleckmann (in the first set on Saturday) but also with the deliriously verbose underground rapper Busdriver (the second set on Friday). At 10 p.m., Bleecker Street Theater, 45 Bleecker Street, near Mulberry Street, West Village , searchandrestore.com; $15, $10 students; two-night pass, $25. (Chinen) 20100218
DAVID LIEBMAN-ELLERY ESKELIN GROUP (Sunday) As he did on an album called “Different but the Same” (Hat Hut), released five years ago, the saxophonist David Liebman finds a front-line tenor foil in Ellery Eskelin, whose playing skews more forceful and less logical. As on the album, they receive adept support from the bassist Tony Marino and the drummer Jim Black. At 8:30 p.m., Cornelia Street Café, 29 Cornelia Street, West Village , (212) 989-9319, corneliastreetcafe.com; cover, $10, with a two-drink minimum. (Chinen)20100218
ANDY MILNE AND BENOîT DELBECQ (Tuesday) Mr. Milne and Mr. Delbecq are resourcefully contemporary pianists, both drawn to quixotic interrogations of harmony and timbre. They team up here — on two pianos, under the heading of “Crystal Magnets” — partly to revisit themes from a strangely beautiful recent album, “Where Is Pannonica?” (Songlines). At 2 p.m., Yamaha Piano Salon, 689 Fifth Avenue, third floor , (212) 339-9995, yamaha.com/yasi; $15, includes CD. (Chinen)20100218
SIRONE MEMORIAL (Thursday) In October the experimental-music world lost Sirone, a bassist of profound creative energies, best known as one-third of the 1970s free-jazz collective the Revolutionary Ensemble. This tribute is well stocked with his former colleagues, including the pianist Dave Burrell, the drummer Andrew Cyrille, the bassist Henry Grimes and the violinist Billy Bang; the full list of participants includes many others. At 7 p.m., St. Peter’s Church, 619 Lexington Avenue, at 54th Street , saintpeters.org; free. (Chinen)