In various press releases and articles, Mannheim Steamroller’s Chip Davis proudly recalls trying to shop his New Age Christmas concept in the early ’80s and meeting with rejection from all the major labels and distributors. Released in 1984, Mannheim Steamroller Christmas went on to sell some 9 million albums, proving the record label execs wrong (again). The Ohio-born Davis then developed a larger-than-life touring ensemble to bring the synth-heavy tunes to life. In 2009, Mannheim celebrated the 25th anniversary of that first Christmas album with a special two CD set that included its renditions of tunes such as “Joy to the World” and “The First Noel.” The live show is a multimedia extravaganza, which is a good thing, since these smooth jazz renditions of yuletide tunes will often put you to sleep. Tonight's concert takes place at 8 at the State Theatre. Tickets start at $10. (Jeff Niesel)