Maurice Ravel's "Bolero," with its obsessive melody and primeval beat, has enthralled audiences since its premiere at the Paris Opera in 1928. You hear it in movies and at the Olympics. Ravel described it, somewhat belittlingly, as simply one long crescendo. But whatever he did worked. The music is a thrill.

"Bolero" is the centerpiece of tonight's concert in Kleinhans Music Hall. There are other goodies, too, in keeping with the heated days of summer. BPO violinist Shieh-Jian Tsai and associate principal cellist Feng Hew are performing Theme and Variations by Miklos Rozsa, the great film composer who wrote the scores to "Ben-Hur" and "The Thief of Baghdad." Completing the concert are light classics including Nikolai Rimsky-Korsakov's "Capriccio Espagnol," Bedrich Smetana's Overture to "The Bartered Bride" and Jacques Offenbach's "Orpheus in the Underworld," with the famous can-can.

The concert starts at 7 tonight in Kleinhans Music Hall. Come early, picnic by the reflecting pool and enjoy treats from food trucks. Concert tickets start at $19. Call 885-5000 for more information.

-- Mary Kunz Goldman