ZZ Top guitarist and whiskered wonder of the world Billy Gibbons has compared his songwriting process to pornography. Perhaps that’s not a shock coming from the man who wrote “Pearl Necklace” and “Tush.”

Gibbons told the Lehigh Valley Express-Times that identifying the key components when working on a new song isn’t easy. “It’s like Supreme Court Justice Stewart said about the definition of pornography, ‘I can’t describe it but I know it when I see it’.”

He also said that the new ZZ Top record likely will be released in March or April of 2012. Recording has been completed on the album, produced by Rick Rubin. Gibbons said it just needs to be “mixed, mastered and named.”