The discussion, which begins at 1 PM, will be held in Room 204ABC at the Anaheim Convention Center.

"Pushing Daisies" star Greene will moderate a panel that comprises Nathan Barr (HBO’s “True Blood”), Jim Dooley (FX’s “Wilfred”), Robert Duncan (ABC’s “Castle”), Mark Isham (ABC’s “Once Upon a Time”), Danny Jacob (Disney Channel’s “Phineas and Ferb”), David Ari Leon (Disney XD and Marvel Entertainment’s “The Avengers: Earth’s Mightiest Heroes”) and Blake Neely (CBS’ “The Mentalist”).

The panelists, according to a press statement, will "describe how they elevate scoring to new heights, as well as participate in WonderCon’s exclusive debut of a live composing demo." A fan-led question-and-answer session will follow.

Ellen Greene began her career as a nightclub singer, performing in the now closed New York cabaret Reno Sweeney. In her early 20s, Joseph Papp took her under his wing and cast her in productions of Boom Boom Room and The Threepenny Opera. Greene earned a Tony nomination for her work in the latter, but it was her role as Audrey in both the original stage and film productions of Little Shop of Horrors that brought her national attention. Among her recent theatrical credits are the London production of Betwixt!, the West Coast staging of Side Man and an all-star reading of Women Behind Bars. Her many screen credits include "Pushing Daisies," "Heroes," "The Cooler," "One Fine Day," "Léon," "Fathers & Sons," "Stepping Out," "Pump Up the Volume," "Talk Radio" and "Next Stop, Greenwich Village." Her solo recording is titled "In His Eyes." She also played Miss Adelaide in the Hollywood Bowl's presentation of the classic Frank Loesser musical Guys and Dolls.

The Anaheim Convention Center is located at 800 West Katella Avenue, Anaheim. The panel is hosted by CW3PR, Costa Communications, Inc. and ASCAP.