Jennifer Higdon's Percussion Concerto has won this year's composition Grammy.This is the category for works written in the last 25 years and recorded for the first time during the "Eligibility Year."
The composer's program notes (PDF):
My “Percussion Concerto” follows the normal relationship of a dialogue between soloist and orchestra. In this work, however, there is an additional relationship with the soloist interacting extensively with the percussion section. The ability of performers has grown to such an extent that it has become possible to have sections within the orchestra interact at the same level as the soloist.