“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.