Guilt for being rich, and guilt thinking that perhaps love and peace isn't enough and you have to go and get shot or something.

As the group disintegrated towards the end of the decade Lennon embarked on a solo career that produced the critically acclaimed albums John Lennon/Plastic Ono Band and Imagine and iconic songs such as "Give Peace a Chance" and "Imagine". After his marriage to Yoko Ono in 1969 he changed his name to John Ono Lennon. Lennon revealed a rebellious nature and acerbic wit in his music writing drawings on film and in interviews.