Add a little spice to your weekend with some swing, samba and cha-cha. Cal Poly Pomona's Crescendo Ballroom Company presents "In Concert," a 90-minute performance of Latin and ballroom dance numbers. Twenty-two students in the company will perform an exciting set of dance routines, and two professional dance couples will perform four solos. The two shows on Sunday, May 24, will be at 3 and 7 p.m. in the University Theater.