Taylor Swift plays music.
`` Bad Blood '' is a song by American singer-songwriter Taylor Swift , from her fifth studio album 1989 ( 2014 ) . `` I Knew You Were Trouble '' is a song recorded by American singer-songwriter Taylor Swift for her fourth studio album , Red ( 2012 ) . Taylor Swift . Its singles `` Shake It Off '' , `` Blank Space '' , and `` Bad Blood '' reached number one in the US , Australia , and Canada .