"Piece by Piece" is a song written by American singer Kelly Clarkson taken from her seventh studio album of the same name. She co-wrote the track with songwriter Jennifer Garduno and with producer Greg Kurstin. A midtempo pop song about restoring someone's faith in love and family relationships, Clarkson promulgated "Piece by Piece" as a sequel to the song "Because of You" (2004) but with a "happy ending". After a discussion with her sister about their family life, she introspectively co-wrote the song in a first-person narrative to her father, whose neglect of his family was used as a juxtaposition to her then-husband Brandon Blackstock's unconditional love for her and their daughter, whom they both promised to never abandon.

Kelly Clarkson is an American singer, songwriter, television personality, and author. She rose to fame after winning the first season of American Idol in 2002, which earned her a record deal with RCA Records. Her debut single, "A Moment Like This", topped the US Billboard Hot 100, and became the country's best-selling single of 2002. It was included on her debut studio album, Thankful (2003), which entered the Billboard 200 at number one, and also yielded the top-10 single "Miss Independent". Trying to reinvent her image, Clarkson parted ways with Idol management and shifted to pop rock for her second studio album, Breakaway (2004). Supported by four US top-ten singles – the title track, "Since U Been Gone", "Behind These Hazel Eyes", and "Because of You" – Breakaway sold over 12 million copies worldwide and won two Grammy Awards.