While Van Halen continue their latest, long between-albums slumber, bassist Wolfgang Van Halen is keeping busy with his "other" job in Tremonti.

The as-yet untitled project, referred to with the #Tremonti2 hashtag on Twitter, has been coming together in the studio over the past several weeks, and Van Halen started adding his parts on Oct. 22, informing fans two days later that he was halfway finished and adding on Oct. 26, "20 songs in 5 days. That's a lot of notes ... Bass tracking is officially complete."

Van Halen's involvement follows his surprise addition to the lineup for Tremonti's 2012 tour and bandleader Mark Tremonti's subsequent invitation for Wolfgang to join on a permanent basis. "Van Halen will always be his priority, whenever they are touring," Tremonti explained. "When he’s not touring, he’ll be with us. He will write and play on the records and, if he is on tour with Van Halen, we will find somebody that he is comfortable with filling in his shoes."

The new album will serve as a follow-up to 2012's 'All I Was,' and finds Mark Tremonti in a lull between projects with his other bands, Creed and Alter Bridge. As for what this means regarding any new music from Van Halen, your guess is as good as anyone's; following a spring 2014 pronouncement from singer David Lee Roth that he was working on a "great project" involving the band, it's been silent on the VH front.