Far out improv, high concept contemporary composition, new jazz scholarship and “cut loose” music from Guadeloupe flood Lowest Manhattan (all the way to Staten Island) this weekend. The folks who bring us the Vision Festival stage 28 hours of multidisciplinary improvisation starting tonight (Friday) at 6 p.m. at Clemente Soso Velez Cultural Center; Mode Records throws itself a benefit marathon concert featuring Philip Glass, John Zorn and Robert Ashley, among many others on Saturday at Abrons Art Center; jazz scholars convene for The Louis Armstrong Symposium at College of Staten Island also Saturday starting at 9 a.m., keynote by Dan Morgenstern) and the Destination Guadeloupe Festival climaxes with Gwo-ka drumming, “gwanda jazz” and zouk at S.O.B.’s on Sunday (bands from Guadeloupe are also there and at Zinc Bar tonight and tomorrow).The possibilities show again the breadth and depth of music made and presented in NYC.