“The Charlie Parker Jazz Festival is one of the more generous rites of summer in the city: a weekend’s worth of free performances, uptown and downtown, with a lineup that cuts across age and style. Named after a peerless alto saxophonist and bebop lodestar, the festival usually spotlights one of his former contemporaries. This year, it’s the magisterial pianist Randy Weston, who recently turned 90; he is to perform on Saturday, Aug. 27, with his African Rhythms Sextet at Marcus Garvey Park.
Appearing on the same bill are the singer Jazzmeia Horn, winner of the 2015 Thelonious Monk International Vocal Jazz Competition, and the gospel-raised organist Cory Henry, with his band the Funk Apostles. Sunday’s program, at Tompkins Square Park in the East Village, will feature a special triumvirate of Jack DeJohnette on drums, Dave Holland on bass and Jason Moran on piano; the singer Allan Harris; the alto saxophonist Grace Kelly; and the Donny McCaslin Quartet, recently acclaimed for its work with David Bowie. Jason Lindner, the keyboardist in Mr. McCaslin’s band, will also headline a Friday night show at Marcus Garvey Park, with the group he calls Breeding Ground. (cityparksfoundation.org.)“