A show featuring Ratt and Sebastian Bach would have been one of the hottest bills of 1990, and it would have been quite a bit pricier than the free one that the two acts are giving at the Fremont Street Experience. Both Ratt and Bach’s previous band Skid Row produced some of the biggest hard rock anthems of the ’80s and early ’90s, and songs like Ratt’s “Round and Round” and Skid Row’s “18 and Life” have become pop-culture staples.

Ratt began as part of the early ’80s Sunset Strip scene in Hollywood, the birthplace of glam metal, alongside bands like Guns N’ Roses, Poison and Mötley Crüe. The band has gone through numerous lineup changes, but today it’s led by original frontman Stephen Pearcy and original bassist Juan Croucier, who are planning a new Ratt album for next year. Skid Row formed a few years later on the other side of the country, and Bach left the band for a solo career in 1996 (he’s since released three solo albums). Together, the two acts represent some of the best of the hair metal era—and one of the top concert deals in town.

Fremont Street Experience, 9 p.m. Sept. 29, free. 702.678.5600