Cameron Crowe's Leon Russell and Elton John documentary "The Union" airing tonight on HBO

“The Union,” a documentary directed by Cameron Crowe (“Almost Famous”) capturing musical legends Elton John and Lawton native Leon Russell as they collaborated on their 2010 duets album, debuts at 8 p.m. tonight on HBO, reports NewsOK TV blogger Melissa Hayer.

Here is a summary of the film, provided by HBO:

After 38 years of not seeing or speaking to Leon Russell, Elton John listens to Russellʼs greatest hits album while on safari in Africa with his partner David Furnish. He is moved to tears. Distraught at the thought that Russell – whom John considers one of his greatest musical influences – has seemingly fallen into obscurity, he vows to contact his idol and propose that they collaborate on an album together.

So begins “The Union,” an unprecedented personal look into the making of John and Russellʼs acclaimed album of the same name.  Stepping into The Village studio in Los Angeles, director Cameron Crowe captures a myriad of intimate moments involving the two artists, including the first-ever filming of John composing music to lyrics written by Bernie Taupin, his longtime collaborator. Underscoring Johnʼs desire that the new album sound like one of Russellʼs classics, the film is filled with concert footage of John and Russell throughout their careers, including Johnʼs first U.S. appearance at The Troubadour in Los Angeles, a show attended by Russell.