The Ken Burns documentary “Mark Twain,” about a man who was considered the funniest person of his time in the late 19th century, starts at 2 p.m. Saturday at the Pasadena Public Library’s Central Branch, 285 E. Walnut St., Pasadena. The documentary reveals Twain’s adventures, successes and defeats. Call (626) 744-4066 or visit pasadenapubliclibrary.net
Rotary Club of Altadena Summer Concert Series features Pat Benatar tribute Live from Earth, starting at 7 p.m. Saturday at Farnsworth Park, 568 E. Mount Curve Ave., Altadena. Free. Call (626) 798-6335 or visit altadenarotary.com.
The Playhouse District presents free jazz concerts from 5 to 7 p.m. Sundays in Vroman’s courtyard, 695 E. Colorado Blvd., Pasadena. Sunday’s concert features Brazilian jazz by Little Brazil. Visit playhousedistrict.org.
The Pasadena Senior Center’s summer concert series features Celtic and bluegrass with Sligo Rags at 6 p.m. Monday at 85 E. Holly St., Pasadena. Call (626) 795-4331 or visit pasadenaseniorcenter.org.