Coryell. Auger. Sample. Three surnames that every contemporary jazz fan knows.

Those names are part of the same band today, but not in the way one might expect -- the trio comprises their offspring. CAST!, an acronym for the Coryell Auger Sample Trio, which performs at Moondog's in Blawnox on Saturday in support of its first release, "Coolidge Returns," represents somewhat of a musical legacy to those three legends but doesn't emulate it.

In addition to touring with their better-known fathers, "We also wanted to step out and do something on our own," said drummer Karma Auger, son of keyboardist Brian.

Karma also performs with the Oblivion Express, the band his father founded in the early 1970s and reformed about a decade ago. "Our names are what they are. We embrace [our legacy]; we're just doing our own thing."

The story of CAST! goes back to 2006, when master fusion guitarist Larry Coryell, best known for his work with Eleventh House, was scheduled to perform with the Express at the Oakville Jazz Festival, about 30 miles south of Toronto.

After that gig Coryell asked Karma Auger about his availability and eventually called him the next July to do a show in San Diego. Coryell's son, Julian, a fine guitarist in his own right, was also part of the band. During that show those two developed some chemistry and subsequently decided to work together -- and then learned that they lived three blocks apart in Venice, Calif. Julian Coryell recruited bassist Nicklas Sample, whose father, Joe, plays piano for the Crusaders, and a band was formed.

However, the recording process was considerably different than the slick productions their fathers often participate in -- the trio took just three days at the end of August last year to write and record. As for the tunes, which range from bluesy shuffles, straight-ahead jazz, nimble fusion and even some samba, "We basically just jammed them down," Auger says. "Sometimes I would start, and then Nick would play a bass line and Julian would come in with a melody."

The sessions were so relaxed that the trio never even used headphones in the studio.

While most of the nine tunes on "Coolidge Returns" are originals, a cover of "Bye, Bye, Blackbird" closes the CD.

"The whole idea of this project is to make music that we could listen to, let the songs be the stars," Auger says.

The tour didn't come together right away.

Auger says the trio did "residencies" at the Mint and the famed Baked Potato in Los Angeles and "turned the band into a band" before hitting the road.

Auger is very familiar with Moondog's, as the Express usually plays there when it comes to Pittsburgh.

"We're very blue collar -- there's not a lot of [glamour with our shows]," Auger says. "Moondog's has that same kind of [vibe] -- that's our kind of crowd."