Louisiana Tech’s biomedical engineering and music departments are joining together to warm people up with warm, festive entertainment with Carols and Cocoa. Concerts at the Biomedical Building’s Rotunda will be performed by Tech’s Chamber Singers at noon, 12:30 p.m., 1 p.m. and 1:30 p.m. Friday, Dec. 10. Additionally, refreshments will be served. Admission is free, and the concerts are open to the public. For more information contact Dr. Sean Teets, director of Choral Activities, at 318-257-5272 or steets@latech.edu.