High Quality Content by WIKIPEDIA articles! "Glassheart" is a song performed by British singer-songwriter Leona Lewis, from her third studio album of the same name, Glassheart (2012). It was conceptualised by Lewis and frequent collaborator Ryan Tedder while she visited him at his family home in Denver, Colorado. It was co-written by Lewis and Tedder with Brent Kutzle, Noel Zancanella, Justin Franks, Fis Shkreli and Peter Svensson. Production of the song was handled by Tedder and Franks, with the latter credited under his production alias DJ Frank E. It was co-produced by Zancanella, Kutzle and Shkreli.