Bobby Hart has died at the age of 86 at his home in Los Angeles after his health declined followed a hip break last year.
The sad news was shared by his friend and co-author Glenn Ballantyne.
The musician wrote songs for the popular 1960s pop band the Monkees.
He worked on their theme song for their show.
The series was about antics of four boys – Davy, Peter, Micky and Mike – who make up the rock ‘n’ roll band the Monkees are captured in this freewheeling 1960s series.
Hart also penned Last Train to Clarksville as well as (I’m Not Your) Steppin’ Stone.

Bobby Hart has died at the age of 86 at his home in Los Angeles after his health declined followed a hip break last year. The band seen in 1966