Megadeth frontman Dave Mustaine sat in with the San Diego Symphony Orchestra on Saturday night, part of a special concert called 'Symphony Interrupted.' The program, presented before a sold-out crowd of 2,200, was highlighted by a monstrous take on Richard Wagner's 'Ride of the Valkyries.'

Mustaine also added scorching solos to Vivaldi's 'Four Seasons' and Bach's 'Air,' in a performabce that the San Diego Union-Tribune said "left people from both camps surprised." Tickets sold out in advance online, but Mustaine assured fans that there will be additional performances: "Don't worry, there will be another 'Symphony Interrupted' and this being the first and all, we have already started to plan on how to make it even more enjoyable."

The guitarist described the performance as "an experiment -- a challenge that I was up for," adding that the classical collaboration is already pushing him into new creative places: "Continuing to improve myself for this show has already made me write ideas that are more twisting and turning, [rather] than straight-ahead songs like 'Skin O' My Teeth' or 'A Tout Le Monde.'"

Mustaine said the initial 'Symphony Interrupted' event was not officially recorded, "because we knew I was going to be still getting used to this whole thing, that I would have a little getting used to this new environment." As Mustaine becomes more comfortable, however, that is still a possibility. "I was 'a fish out of water,' but we learn so much from 'doing' the songs that it is just a short matter of time until we start 'being' the songs. I want everyone to hear this venture with everything just right."

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