Bobby Hart, the songwriter behind some of the Monkees' most iconic hits, has died. He was 86.

The Monkees' official account confirmed the news on social media: "He will be remembered for his incredible talent and his innate spirituality," the band wrote. "You will be so missed, Bobby."

Alongside Tommy Boyce, Hart was one half of the songwriting duo Boyce and Hart. The pair penned tracks that would become synonymous with the Monkees' sound, like "Last Train to Clarksville," "(I'm Not Your) Stepping Stone," and the theme song for the made-for-television group with its trademark jingle "Hey, hey, we're the Monkees." As a solo songwriter, Hart wrote hits like "Hurts So Bad" by Little Anthony & The Imperials.

Hart had been in poor health since breaking his hip last year, and died at his home in Los Angeles, the Associated Press reported.

Micky Dolenz, the last surviving member of the Monkees, posted another tribute on his personal account: "Another great is gone," he wrote.