Instrumental Duet,Piano Alto Saxophone,Instrumental Duet,Piano - Level 5 - Digital Download SKU: A0.1021985 Composed by Mark Engebretson. Contemporary. 62 pages. Effiny Music #6269083. Published by Effiny Music (A0.1021985). Duo Concertante for two alto saxophones and piano. Originally written for Frederick L. Hemke and Frederic J.B. Hemke in the version with orchestra. The father and son duo premiered the work in the spring of 2003 with the Wroclaw Philharmonic Orchestra, under the baton of Mariusz Smolij. Another version with Wind Ensemble is also available. Duration: 12:00.