I just watched Keep on Keeping On, a documentary about Clark Terry. It was amazing to see how music kept him going. As he was in the hospital room, he would have young students at his bedside - mentoring them the whole time. As he went for treatments, he would be talking about jazz licks and history - listening to Clifford Brown.
There are also clips on Youtube of him critiquing young jazz musicians. His love of music was just as strong as his dedication to the next generation of jazz students. He will be missed.