David Crosby, singer-songwriter-guitarist and founding member of the Byrds and Crosby, Stills & Nash has died at the age of 81.

 The cause of death has not been revealed. He was active on social media and his death came as a surprise to those who followed him.

David Crosby, a singer-songwriter-guitarist and founding member of the Byrds and Crosby, Stills & Nash , had a successful career in the music industry,

however, his personal life was marked by heavy drug use, which led to a short prison sentence in 1985 for drug.

He underwent a liver transplant in 1994 and survived diabetes, hepatitis C and heart surgery in his 70s.

 In his last interview, he mentioned that he had stopped touring because of tendonitis in both hands.

Despite the negative impact of his drug use, he was able to recover and enjoyed a creative renaissance in his 70s.

 Releasing several solo albums and collaborating with others, including his son James Raymond.

He was married to Jan Dance in 1987 and had a son, Django, in 1995, and a daughter, Donovan, with Debbie Donovan.

 He also had two children with Melissa Etheridge and her then-partner Julie Cypher.