Trumpeter Alex Sipiagin's ninth Criss Cross album may be his most conceptually ambitious.The 43-year-old trumpeter, these days garnering broad international recognition as a solo artist, as well as for his inspired virtuoso playing in various Dave Holland and Mingus Orchestra contexts, offers seven original pieces - performed by a distinguished band of A-listers - that contain heady polyphony,substantial melodies, beautiful voicings, and intoxicating rhythms. It's a cutting edge of the 21st century jazz. The band: Chris Potter, tenor sax and flute; David Binney, alto sax; Craig Taborn, piano and fender rhodes; Boris Koslov, bass; and Eric Harland, drums.