Katie Mayhew, 16, of West Tisbury will perform with the Boston Pops on Wednesday, June 18, at Symphony Hall. The Pops will be conducted by Keith Lockhart. Broadway star Brian Stokes Mitchell will perform the same evening.

Katie is one of six semi-finalists in the Pops High School Sing-Off. She will sing Being Alive, a song from the Broadway musical Company. She and two other semi-finalists will perform that night. The three other semi-finalists will have performed the night before.

From those six, two finalists from the Sing-Off will go on to perform with the Pops on July 1. From there, a winner will be chosen to sing with the Boston Pops at the Charles River Esplanade on July 3 and 4.

The June 18 concert begins at 8 p.m. Tickets range from $19 to $87 and can be purchased at Bostonpops.org or by calling 888-266-1200.