GREENSBURG, Pa. (AP) — Dionne Warwick has postponed a Valentine’s Day concert at a western Pennsylvania theater after the death of her cousin Whitney Houston.

Warwick’s concert at The Palace Theater in Greensburg will instead be held March 2. Tickets for Tuesday night’s concert will be honored for the new show.

Warwick is a Grammy Award-winning singer known for such hits as “Do You Know The Way to San Jose,” ”I’ll Never Fall in Love Again” and “That’s What Friends Are For.”

Houston was found dead in her suite at the Beverly Hilton Hotel in Los Angeles on Saturday. The cause of her death is being investigated.