Frank Zappa's vaults will reopen in July for a pair of new releases, Frank Zappa for President and The Crux of the Biscuit.

Both scheduled to arrive July 15, the new titles explore different sides of Zappa's many-faceted musical personality. "Frank Zappa for President? You betcha! We know at various times he wanted to run for office," reads a label press release. "In the spirit of the dramatic 2016 presidential election adventures comes a release that gives us a glimpse into what could have been. This album is comprised of unreleased compositions realized on the Synclavier, along with other relevant tracks mined from the Vault, with a political thread tying it all together. Don't forget to register and vote!"

The Crux of the Biscuit, meanwhile, was put together to celebrate the 40th anniversary of Zappa's Apostrophe album in 2014. "As part of Zappa Records' ongoing Frank Zappa Project/Object Audio Documentary Series," notes the press release, "it contains rare alternate mixes, live performances, and studio session outtakes."

Frank Zappa for President and The Crux of the Biscuit are part of a spate of recent vault projects that includes a handful of titles released in May, and continue the Universal partnership announced by the estate in 2015. Check out the complete track listings for both new albums below.

Frank Zappa for President
"Overture to 'Uncle Sam'"
"Brown Shoes Don't Make It" (remix)
"Amnerika" (vocal version)
"If I Was President…"
"When the Lie's So Big" (live)
"Medieval Ensemble"
"America the Beautiful" (live)

The Crux of the Biscuit
"Cosmik Debris"
"Uncle Remus" (mix outtake)
"Down in De Dew" (alternate mix)
"Apostrophe'" (mix outtake)
"The Story of Don't Eat the Yellow Snow/St. Alphonzo's Pancake Breakfast"
"Don't Eat the Yellow Snow/St. Alphonzo's Pancake Breakfast" (live)
"Excentrifugal Forz" (mix outtake)
"Energy Frontier" (take 4)
"Energy Frontier" (take 6 with OD's)
"Energy Frontier" (bridge)
"Cosmik Debris" (basic tracks take 3)
"Don't Eat the Yellow Snow" (basic tracks- alternate take)
"Nanook Rubs It" (basic tracks- outtake)
"Nanook Rubs It" (session outtake)
"Frank's Last Words....."

The Top 100 Rock Albums of the '60s