Wainwright's fifth studio album, Release the Stars, was released by Geffen on May 15, 2007. The album was produced by Wainwright and featured Richard Thompson, friend Teddy Thompson, sister Martha Wainwright, mother Kate McGarrigle, Neil Tennant, Joan Wasser, Julianna Raye, Larry Mullins (professionally known as Toby Dammit), and actress Sian Phillips. It reached No.2 on the UK Albums Chart, and debuted at No.23 on the Billboard 200. The first single, "Going to a Town", was released on April 3, 2007 in the iTunes Music Store. The second single released was "Rules and Regulations", and the third single was a 500-copy (12" vinyl) release of "Tiergarten", a one-track EP with the Supermayer remix of Tiergarten, which was released exclusively through iTunes and 7digital on October 29.  Two video clips were released for the album: "Going to a Town", directed by Sophie Muller, and "Rules and Regulations", directed by Petro Papahadjopoulos and styled by J.W. Anderson. Release the Stars was certified gold in the UK. The accompanying world tour saw Wainwright visit North America, Europe, Asia, and Australia, ending on February 14, 2008 with a concert at the Radio City Music Hall in New York City.  On June 10, 2006, NPR's Weekend Edition Saturday broadcast an interview of Wainwright by Scott Simon. The segment concerned Wainwright's sold-out pair of Carnegie Hall shows on June 14 and 15, 2006 in which he performed the entire Judy Garland concert album that was recorded there in 1961. He later repeated his performance at the London Palladium, the Paris Olympia, and the Hollywood Bowl in Los Angeles. Live CD and DVD recordings of the concerts were released on December 4, 2007. The DVD is entitled Rufus! Rufus! Rufus! Does Judy! Judy! Judy!: Live from the London Palladium. The CD album, Rufus Does Judy at Carnegie Hall, is a recording of his show at the legendary New York venue. In 2008, Garland's daughter Lorna Luft expressed strong approval of Wainwright's recordings of her mother's songs. The album was nominated for a 2009 Grammy Award for Best Traditional Pop Vocal Album.

Answer this question "What is Release the Stars?" by extracting the answer from the text above.
Wainwright's fifth studio album, Release the Stars,