Musicians line up to join the Jonas Brothers on stage.

The Jonas Brothers seem to be a hot ticket still.

The brothers performed a free three hour 24-song concert at the House of Blues on the Sunset Strip.

After promoting it on the radio and their MySpace page, about 1,000 fans were already lined up several hours before Kevin, Joe and Nick even arrived.

The brothers had some surprises they had in store for their fans and some of the musicians who stopped by to jam with the Jonas Brothers. We also included some of the videos…….

They covered John Mayer’s “Gravity,” Tom Petty’s “Freefallin,’” Bob Marley’s “Waiting in Vain” and Kanye West’s “Heartless.”

Demi Lovato joined them on stage to sing some of her singles with the brothers and also John Mayer’s “Daughters.” Jordin Sparks joined them for Stevie Wonder’s “Superstition.” Jesse McCartney performed his hit, “Leavin’.”

The Jonas Brothers and Dan Aykroyd even covered the 1956 Bo Diddley hit “Who Do You Love?”

The show ended shortly after midnight with all the performers back on stage for the Beatles’ “Hey Jude.”