Friends and family of rock and country singer Glen Campbell announced he has passed away at age 81.

Glen Travis Campbell was born in 1936. He passed away following a long battle with Alzheimer’s disease.

On his website, family and friends released the following statement:

“It is with the heaviest of hearts that we announce the passing of our beloved husband, father, grandfather, and legendary singer and guitarist, Glen Travis Campbell, at the age of 81, following his long and courageous battle with Alzheimer's disease.

Glen is survived by his wife, Kim Campbell of Nashville, TN; their three children, Cal, Shannon and Ashley; his children from previous marriages, Debby, Kelli, Travis, Kane, and Dillon; ten grandchildren, great- and great-great-grandchildren; sisters Barbara, Sandra, and Jane; and brothers John Wallace 'Shorty' and Gerald.”

The family has asked that in lieu of flowers, donations be made to the Glen Campbell Memorial Fund at BrightFocus Foundation by clicking here.

Campbell's daughter, Ashley, posted on social media following her father's death.

Heartbroken. I owe him everything I am, and everything I ever will be. He will be remembered so well and with so much love. A post shared by Ashley Campbell (@ashcambanjo) on Aug 8, 2017 at 1:42pm PDT

Kyle Young, CEO of the Country Music Hall of Fame and Museum, released the following after Campbell's passing:

"Had Glen Campbell 'only' played guitar and never voiced a note, he would have spent a lifetime as one of America’s most consequential recording musicians. Had he never played guitar and “only” sung, his voice would rank with American music’s most riveting, expressive, and enduring. He left indelible marks as a musician, a singer, and an entertainer, and he bravely shared his incalculable talent with adoring audiences even as he fought a cruel and dread disease. To all of us who heard and loved his soulful music, he was a delight."

Many of those who knew and loved Campbell dearly took to social media to remember him after his death.

Thank you @GlenCampbell for the artistry, grace & class you brought to country music. You were a shining light in so many ways. — Brad Paisley (@BradPaisley) August 8, 2017

Rest In Peace Glen... no words right now — The Oak Ridge Boys (@oakridgeboys) August 8, 2017

Read More: Country Music, Entertainment World Reacts To Glen Campbell's Death

Campbell's son, Shannon, has been part of the recording group Little Feather. The group released the following statement:

"To the world Glen Campbell is iconic, but to Shannon he was his one and only father. We send our most sincere condolences to our band-brother Shannon Campbell and his family. The legacy of his father is one we will always cherish and his talent will live on through Shannon as first and foremost, our brother, but as the son of the Glen Campbell. We will have his presence with us always and our hearts go out to the entire family."