Fun Favorites Trumpet Trio Flex. Book and CD.Peter Scaars has arranged ten well known numbers for three trumpets in various genres and styles.Play the melody with the combo on the CD.or play the trio version with the other two recorded parts.That will sound great in itself. but you can also form a trio with two co-players. and have yourself accompanied by the combo on the CD. Titles inc. I Got Rhythm. We've Only Just Begun.Moon River. Eye of the Tiger. Good Vabrations. Summertime. and More.