Fan Convention

First, it was “Star Trek.” Then, “The X-Files.” Now, the fans of the Sci-Fi Channel’s “Farscape” series also have a place to go. The first official “Farscape” fan convention will be this weekend in Burbank. On hand will be cast members Ben Browder (Commander Crichton), Claudia Black (Officer Aeryn Sun), Virginia Hey (Zhaan), Anthony Simcoe (D’Argo) and Gigi Edgley (Chiana). In addition, behind-the-scenes footage, onstage presentations, contests and licensed merchandise will be featured.

* “Farscape” Fan Convention, Saturday-Sunday, 1-7 p.m., Burbank Hilton, 2500 Hollywood Way, Burbank. $10-$20 each day. (818) 409-0960.

Classical

Musical director James Domine will lead the San Fernando Valley Symphony in a concert of Russian music Sunday in Woodland Hills. The program will include Rimsky-Korsakov’s “Scheherazade” and Borodin’s “Polovtsian Dances.” As a finale, the ensemble will perform Tchaikovsky’s “1812 Overture,” accompanied by the cannons of the 1st Battalion, 144th Field Artillery of the California National Guard.

* San Fernando Valley Symphony, “Music of Russian Composers,” Sunday, 5 p.m., Warner Park, 5800 Topanga Canyon Blvd., Woodland Hills. Free. (818) 704-1587.

Beatles

For aging Beatlemaniacs, there is no such thing as “too much Beatles.” BackBeat, a Beatles tribute band, will answer the call.

* BackBeat, Sunday, 5:30 p.m., Newhall Park, 24933 Newhall Ave., Newhall. Free. (661) 298-2787.

A Cappella

Burbank’s “Almost Free” concert series at the Starlight Bowl presents a night of a cappella music Sunday, featuring the Blenders and Rockapella. The Blenders, a Minneapolis-based group, have toured throughout the United States and performed with Jay Leno, Howie Mandel, Blues Traveler and Lou Rawls. Rockapella was formed in New York City in the mid-1980s. In addition to its television commercial for Folgers coffee, the group has been featured on PBS and in concerts with Billy Joel, Sting and Don Henley.

* The Blenders and Rockapella, Sunday, 6:30 p.m., Starlight Bowl, 1249 Lockheed View Drive, Burbank. $3-$5. (818) 525-3721.