His ALS gradually robbed him of his ability to play guitar, to walk, and eventually his ability to speak. He now communicates with his eyes via a system developed by his father. Due to the nature of the disease, he remains mentally sharp and, with the aid of a computer, continues composing. In the back of the "Perspective" CD case, Becker states "I have Amyotrophic Lateral Sclerosis. It has crippled my body and speech, but not my mind." His medical condition has remained stable since 1997. In 2003, Becker posted on his website that he was feeling better and had gained some weight, while the folder for his 2008 album "Collection" also mentions an upcoming book.