Key to My Soul is the third studio album by German recording artist Sarah Connor. It was released by X-Cell and Epic Records on 17 November 2003 in German-speaking Europe. As with her previous albums, Green Eyed Soul (2001) and Unbelievable (2002), Connor reunited with songwriting and production duo Rob Tyger and Kay Denar to work on the majority of the album, with Diane Warren, TQ, Wayne Wilkins, and Connor's then-husband Marc Terenzi receiving songwriting credits and Brock Landers and Stephen Shape producing "Daddy's Eyes".

Sarah Connor is a German pop singer. She rose to prominence after she signed with X-Cell Records in 2000 and released her debut album Green Eyed Soul (2001) the following year. She followed it with a series of successful albums, including Unbelievable (2002), Key to My Soul (2003), Naughty but Nice (2005), Christmas in My Heart (2005), Soulicious (2007), Sexy as Hell (2008) and Real Love (2010). Several songs from these albums became hit singles on the pop record charts, including the number-one hits "From Sarah with Love", "Music is the Key", "Just One Last Dance", "Living to Love You" and "From Zero to Hero". In 2015, Connor's first German language project Muttersprache became her second chart-topper after a decade.