Question: What band was Amy Grant's husband in?

Context paragraphs:
Rock of Ages... Hymns and Faith: Rock of Ages... Hymns and Faith is the thirteenth studio album by singer Amy Grant.  It is the follow-up to her 2002 release Legacy... Hymns and Faith.  "Rock of Ages" is Amy Grant's 11th Christian chart-topping album.

Vince Gill: Vincent Grant Gill (born April 12, 1957) is an American country singer, songwriter and multi-instrumentalist.  He has achieved commercial success and fame both as frontman to the country rock band Pure Prairie League in the 1970s and as a solo artist beginning in 1983, where his talents as a vocalist and musician have placed him in high demand as a guest vocalist and a duet partner.

Greatest Hits 1986–2004: Greatest Hits 1986–2004 is a compilation album by pop singer Amy Grant, released in 2004.  It was the first compilation of Amy Grant's music to be released since "The Collection" in 1986.  It includes two previously unreleased songs: "The Water" and "Come Be With Me" and pressings of the CD on A&M Records contain a bonus CD of remixes and radio edits as mentioned below.

Every Heartbeat: "Every Heartbeat" is a 1991 single by American Christian singer Amy Grant.  It was released as the third single from the "Heart In Motion" album, though it was the second from the album to be released to mainstream pop radio.  After the unexpected major success of Grant's previous single, "Baby Baby," which topped both the United States' "Billboard" Hot 100 and Adult Contemporary charts, there seemed the question on how to follow it up.  The chosen single was "Every Heartbeat," and although it did not hit number one, it still managed to make the #2 spot on the Hot 100 and the Adult Contemporary chart for one and six weeks respectively.  In both cases Every Heartbeat was kept from the top spot by Bryan Adams' song "(Everything I Do) I Do It for You".  Charlie Peacock wrote the song's music and chorus lyrics, with Grant and Wayne Kirkpatrick composing the remaining lyrics.  In 2004, Sixpence None The Richer covered "Every Heartbeat" on the album "Full Circle: A Celebration of Songs and Friends", which commemorated Charlie Peacock's 20-year anniversary as a solo recording artist.  Mark Lowry parodied the song with the title "Every Teacher".  In 2014, the song was included on Grant's remix compilation album titled "In Motion: The Remixes".  A digital remix EP was released on iTunes in support of the album which charted at number 13 on the "Billboard" Hot Dance Club Songs chart.  In 1992 Kids Incorporated covered "Every Heartbeat" in the Season 8 episode "Old Friends".

ReJoyce: The Christmas Album: ReJoyce: The Christmas Album is the fourth studio album by American pop singer Jessica Simpson.  It was released by Columbia Records on November 23, 2004.  The album features cover versions of popular Christmas songs and includes a duet with her sister, Ashlee Simpson, on the song "Little Drummer Boy".  Additionally, it also includes a duet with Nick Lachey, Simpson's husband at the time, on "Baby, It's Cold Outside".  The cover of Amy Grant's "Breath of Heaven (Mary's Song)" was notable, as Simpson has said that Amy Grant is one of her favorite recording artists and her role model.

Takes a Little Time (Amy Grant song): "Takes a Little Time" was a maxi-single released in 1997 (see 1997 in music) to promote Amy Grant's album "Behind the Eyes", which was also released that year.  "Takes a Little Time" included two songs from "Behind the Eyes", as well as a new version of Grant's 1982 Christian radio hit, "El Shaddai".  The maxi-single was also an enhanced CD (ECD), meaning it had a video that consumers could watch when they put it in their home computer.  The ECD portion of the CD contained a live acoustic version of the song After the Fire, which Grant later released on her 2003 album "Simple Things"; Grant stated on Oprah that she had written the song for her mother.

Amy Grant (album): Amy Grant is the eponymous debut studio album by then-teenage Christian singer Amy Grant, released in 1977 on Myrrh Records.  Three songs from the album made Top Ten Christian radio airplay: "Old Man's Rubble", "Beautiful Music", and "What a Difference You've Made".  The latter track was made more famous by country singer Ronnie Milsap, as "What a Difference You've Made in My Life".

Time Again... Amy Grant Live: Time Again... Amy Grant Live is the 21st album by Christian music singer-songwriter Amy Grant, released on September 26, 2006 (see 2006 in music).

Amy Grant discography: American singer-songwriter Amy Grant made her recording debut as a teenager and by the 1980s had gained fame in Christian music thanks to the songs "Father's Eyes", "El Shaddai", and "Angels".  In 1986, she had her first number-one single on the "Billboard" Hot 100 in a duet with Peter Cetera, "The Next Time I Fall".  Grant was becoming more famous in the world of pop with such albums as "Unguarded" and "Lead Me On".  However, it wasn't until her eighth studio album "Heart in Motion" that Grant made a breakthrough into mainstream music.  "Heart in Motion" produced the hit singles "Baby Baby", "Every Heartbeat", "That's What Love Is For" and "Good for Me", all of which made it into the top ten of the "Billboard" Hot 100, with the first two reaching No. 1 and No. 2 respectively.  It remains Grant's most commercially successful album to date, having been certified five-times platinum by the Recording Industry Association of America.  A Christmas album, "Home for Christmas", was released shortly afterwards, reaching No. 2 on the "Billboard" 200, her highest album entry to date.  Grant went on to release the albums "House of Love" and "Behind the Eyes" in the mid-nineties.  Her first full-length studio album of all-new material since 2003, "How Mercy Looks from Here", was released on May 14, 2013.

Chasing Mississippi: Chasing Mississippi is the second studio album released by singer-songwriter Dave Barnes.  Unlike Barnes' first album, "Brother, Bring The Sun", Barnes co-produced the album along with Ed Cash.  Due the success of the first album and its high calibre, Christian music veteran Amy Grant and husband, Country music veteran Vince Gill both offered their talents towards the creation of this album.  Barnes accepted and both appear on the album in separate songs.

Supporting paragraphs: Chasing Mississippi Vince Gill
Answer: Pure Prairie League