"We have been talking lately, and he sent us a donation," writes Becker. "People should know that he didn't ignore the ice bucket challenge but wanted to do something less public and from his heart."

Roth chose to donate to the cause and posted support for others to participate, as well. Becker joined Roth's solo band in 1989 and is featured on his 1991 album, "A Little Ain't Enough." The guitarist was diagnosed with ALS as he was preparing for a tour with Roth and was given three to five years to live.

Due to his illness, Becker eventually lost the ability to speak and now communicates with his eyes via a system developed by his father. Although his ALS gradually robbed him of his ability to play guitar, to walk, and eventually even to speak, he still remains mentally sharp and, with the aid of a computer, continues composing.