Trans-Siberian Orchestra, Verizon Center, Sunday, Dec. 16, 3 p.m. and 7 p.m.
Two troupes of this orchestra criss-crossing the U.S. between the beginning of November and early January are doing more than 100 shows to crowds that grow larger every year. Its holiday concert comes with two screaming guitars, a string septet, a load of pyrotechnics, six Broadway vocalists, two keyboardists, a bassist, a drummer and a sentimental seasonal story line. Stylistic rock takeoffs on Christmas carols, Tchaikovsky’s “The Nutcracker” and works of Carl Orff, Rimsky-Korsakov, Bach and Liszt result in “hybrid forms of music that normally never would have occurred,” as the orchestra’s web site says. “First the music is created with no artificial limitations, and then we seek out within the classical, rock, Broadway and R&B worlds the very best signers and musicians to bring each song to life.” Tickets through Ticketmaster.