Trio Flex is a clever concept that offers you a range of possible options. As well as a demo version played by live instruments, the online audio contains two play-along tracks for each piece. One track features the combo only, and the other track features the combo plus the second and third parts of the trio. Peter Kleine Schaars has arranged ten well-known numbers for three wind instruments in various styles and genres. Play the melody with the combo on the online audio, or play the trio versi...