Laudate Dominum (from Vesperae solennes de confessore, K. 339). By Wolfgang Amadeus Mozart (1756-1791). Edited by John Leavitt. For Choral (SATB). Treasury Choral. 12 pages. Published by Hal Leonard (HL.8596776).
From the Solemn Vespers, K. 330, this edition is a wonderful introduction to music of the classical era. The soprano solo and SATB choral parts are well within the capabilities of high school performers. Performance Time: Approx. 3:45.