I teach middle school music, and two of my classes are special education. One group has several non-verbal students, and one of the teaching assistants is severely hard of hearing. I use simple songs with hand motions, but incorporate some ASL into certain songs. Cumulative songs become very challenging, and very funny, with the addition of ASL. But one of the finest things ever said to me was when Mrs. A said, "I love to watch you sing. To me, your lips are the music." It was not of course, sexual, but musical. Music is many things to people.