20th Century. Originally for trombone & organ. This edition edited by Ken Shifrin with cadenzas by Elizabeth Raum. Also known as "Duet," "Duo Concertante" and "Concertante." There are four titles running around for this same piece, depending on where youare or what copy of the piece you have. They include "Duet" (the first title we encountered); "Duo Concertante" (with keyboard), "Piece Concertante" (also with keyboard) and plain old "Concertante" (originally with band, but now also with keyboard). They're all the same piece, just be careful of which accompaniment you need. And again, this edition is the only one with cadenzas, so if you are using this for a contest piece (NYSSMA customers, take heed), then you will need this edition. -cdp