Country band Alabama will mark their 50th year together with a new tour in 2019, more than a year after founding member Jeff Cook announced that he has Parkinson’s disease.

The Grammy-winning trio of Randy Owen, Teddy Gentry and Cook formed in 1969 in Fort Payne, Alabama, and went on to dominate the sound of country music in the 1980s, scoring dozens of No. 1 hits, including classics like “Mountain Music” and “Dixieland Delight.”

Guitarist and fiddle player Cook announced in 2017 that he had been diagnosed with the chronic neurological disorder years ago and he would limit his touring with the band.

Cook will perform on their new tour, which begins Jan. 10 in Detroit, as much as he’s physically able.

The Associated Press contributed to this article