It's a mistake to call Spanish Harlem Orchestra's music Latin jazz. Led by pianist, arranger and producer Oscar Hernández, SHO specializes in salsa dura (heavy salsa) — that is, old school Afro-Caribbean music played with all the flash and fury of the Latin big bands heard in New York during the 1960s and 1970s. The 12-member-plus orchestra, huge by today's standards, includes a full horn section and swinging rhythm section that produce a big, big sound with an infectious beat. This is not music for the faint-hearted. Today's performance, ¡Ritmo Latino!, is sponsored by the Society for the Performing Arts.