Happy 81st. Birthday to retired singer/songwriter/musician, #PeterPaulCetera of solo fame and formerly of the band #Chicago ! 🥳🎉🎊🎈🎂🎁🎼🎶🎵🎸🎤 #GloryOfLove #IfYouLeaveMeNow #YoureTheInspiration #HardHabitToBreak #StayTheNight #HardToSayImSorry & many more.