Don Felder has paid tribute to his fellow Eagles bandmate, the late Glenn Frey.

Felder posted a lengthy remembrance of Frey on his social media accounts, calling Frey an "amazing genius" and noting that he will be sorely missed.

"Glenn's passing was so unexpected and has left me with a very heavy heart filled with sorrow," Don wrote.

"He was so young and still full of amazing genius.

He was an extremely talented songwriter, arranger, leader, singer, guitarist - you name it - and Glenn could do it and create 'MAGIC' on the spot.

His visions and insights into songs and lyrics have become legendary and will echo throughout time on this earth for decades to come."

"Glenn was the one who invited me to join the Eagles in 1974, and it turned out to be a gift of a lifetime to have spent so many years working side by side with him.

He was funny, strong and generous. At times, it felt like we were brothers and at other times, like brothers, we disagreed.

Despite our struggles and difficult moments together, we managed to create some magical songs, recordings and live shows."