Heaven Knows was written by an American singer who is known as the lead singer of what American rock band?
Taylor Momsen Taylor Michel Momsen (born July 26, 1993) is an American singer, songwriter, former actress, and model. She is known for being the lead singer and frontwoman of the American rock band The Pretty Reckless. She is also known for portraying the character of Jenny Humphrey on the CW teen drama series "Gossip Girl" (2007–2012) and Cindy Lou Who in the film "Dr. Seuss' How the Grinch Stole Christmas" (2000).
Bart Millard Bart Marshall Millard (born December 1, 1972) is an American singer and songwriter who is best known as the leader of the band MercyMe. He has also released two solo albums: "Hymned, No. 1" in 2005 and "Hymned Again" in 2008. The latter garnered him a solo Grammy nomination in the category of Best Southern, Country, or Bluegrass Gospel Album.