As a composer, Gress is interested in unifying the sound of an album by writing themes that echo or resonate off each other.

NPR: Summing Up Drew Gress' 'Irrational Numbers'

For Gress, it's an update of how horns intertwine in old New Orleans jazz.

NPR: Summing Up Drew Gress' 'Irrational Numbers'

Gress' quintet has toured a bunch since recording the fine 7 Black Butterflies in 2004.

NPR: Summing Up Drew Gress' 'Irrational Numbers'