Musical style

   Her music is predominantly pop^[1] and has included ballads and pop rock.^[62] Love and heartbreak are major themes in Tisdale's songs and her output makes use of electronic instruments such as drum machines and electric guitars. She co-wrote several songs on her studio albums.^[63][64][65] Her musical influences include Britney Spears,^[1] Christina Aguilera,^[1] Lindsay Lohan,^[1] Avril Lavigne,^[1] Kelly Clarkson,^[66] The Used,^[66] Boys Like Girls,^[66] Michael Jackson,^[67] My Chemical Romance,^[68] Lady Gaga,^[69] and Fergie^[70] and in an AOL interview, Tisdale said, "I’ve been a big fan of Pink ever since she started. I love Katy Perry’s sense of humor and her pop/rock feel. I love Pat Benatar's music. I’m inspired by all these women when I’m going into the studio, but almost anything inspires me."