"Musik im Bauch" at Make Music New York From a wealth of options, some of us chose to end our Make Music New York day with two hourlong concerts in the Naumburg Bandshell of Central Park, culminating in a performance of Karlheinz Stockhausen's "Musik im Bauch" ("Music in the Belly"), performed by Iktus Percussion. With the New York Philharmonic poised to perform Stockhausen's "Gruppen" in the Park Avenue Armory next week, it appears that much, if not all, is forgiven here for his ill-judged characterization of the Sept. 11 attacks as "the greatest work of art that is possible in the whole cosmos." "Musik im Bauch" is an innocent enough jape: a piece of performance art that is also a play on music boxes, with the players moving in the herky-jerky, lurching manner of music box figures and then extracting "real" music boxes from the stomach of a human-size puppet of a bald eagle. This was Stockhausen, right? In the earlier concert, at 6, Harold Rosenbaum and his New York Virtuoso Singers performed "Greetings to Denmark," a program they had sung in Denmark and Sweden a couple of weeks before, much of it skillfully composed by Roger Davidson, the founder and president of the Society for Universal Sacred Music, which presented the concert. Here the chorus proved heroic, holding forth in direct sunlight and blistering heat, though a fickle amplification system turned some balances askew. Those of us who exited the park to the west after the Stockhausen were blessed with a stunning view of a glorious sunset straight down 72nd Street. The huge, glowering red ball, it seemed, had come to remind everyone just what a solstice celebration is all about, and it thoroughly upstaged most of what had come before, fine as much of that was.