Lacey Nicole Sturm (née Mosley, born September 4, 1981) is an American singer-songwriter from Arlington, Texas. She is co-founder and lead vocalist of the alternative metal band Flyleaf. In 2000, Sturm began to play with drummer James Culpepper. The pair worked with guitarists Sameer Bhattacharya and Jared Hartmann. In 2002, Pat Seals, Flyleaf's current bassist, joined, forming a group named Passerby. Due to legal reasons, they renamed themselves Flyleaf in June 2004. Sturm has also worked with Apocalyptica on their song "Broken Pieces" and with Orianthi on the song "Courage."