To raise money for musicians’ health and welfare, how ’bout a jazz party? In three lofts with river views, a thousand attendees of every age, shape, style enjoyed food ‘n’ drink ‘n’ performances including Jimmy Heath playing “Gingerbread Boy,” Arturo O’Farrill‘s teen sons mastering Latin jazz, baritone saxist Hamiet Bluiett with Kahil El’Zabar on mbira. The Jazz Foundation of America kicked out the jams on Sunday night, and raked in donations.