�Udentity� by the Denman Maroney Quintet has the �hyperpiano� as main focus. The title is a word coined by Harry Partch meaning undertone identity. In the tradition of Henry Cowell, John Cage and George Crumb, Maroney offers here a new and very convincing opus of his always imaginative attempts, in a jazz context, to extend the possibilities of the instrument invented by Bartolomeo Cristofori. But because there's much more in �Udentity� than the piano, and because this complex yet accessible music is structured with different simultaneous tempos, we find him in the company of superlative musicians. Saxophonist/clarinetist Ned Rothenberg is on the top of his guts-and-brain approach to jazz, trumpeter David Ballou adds his �third stream� expertise, and the rhythm section formed by Reuben Radding (bass) and Michael Sarin (drums) contributes with a solid backup to all things happening. A must have, demonstrating what is jazz in this beginning of the 21st century.