Input (grade 12): coming out as "John Lennon with the Plastic Ono Band", and their two proper solo debut albums as John Lennon\/Plastic Ono Band and Yoko Ono\/Plastic Ono Band).
Output (grade 7): The Plastic Ono Band was a rock and roll band formed by Yoko Ono with husband (and former Beatle) John Lennon.