The Los Angeles Chamber Orchestra (LACO) presents the world premiere of “Evidence” by composer, conductor and poet Matthew Aucoin, who will conduct his work on Saturday, May 14 at 8 p.m. at the Alex Theatre in Glendale, and Sunday, May 15 at 7 p.m. at UCLA’s Royce Hall.

(The Los Angeles Chamber Orchestra spotlights composer Matthew Aucoin during concerts on May 14 and 15.)

LACO music director Jeffrey Kahane conducts the remainder of the program, which showcases pianist Marc-André Hamelin, who will perform Mozart’s Piano Concerto No. 17 in G major. The program ends with Schumann’s Symphony No. 2 in C major. As the concluding program of LACO’s 2015-16 Orchestral Series, the concerts mark the final appearances of LACO’s principal oboe Allan Vogel and principal flute David Shostac, who are retiring after 85 years of combined service to the orchestra.

Additionally, USC Thornton School of Music students Joanna Lee and Philip Marten join the violin sections for the concerts as part of the LACO-Thornton Strings Mentorship Program, now in its sixth year. Lee and Marten won the opportunity in a mock orchestral audition for strings last year as part of the mentorship program, a unique collaboration between USC’s Thornton School of Music and LACO.

LACO commissioned Aucoin to create the work as part of its “Sound Investment” program, initiated during Kahane’s tenure 15 years ago to engage audiences with developing new works. It gives audiences a rare opportunity to create a legacy in music and observe first-hand the development of a new work from the composer’s earliest ideas to the finished composition.

Tickets start at $27. The Alex Theatre is located at 216 N. Brand Blvd., Glendale. Royce Hall is located at 340 Royce Drive, on the UCLA campus. For information, call (213)622-7001, or visit www.laco.org.