I have been a transporter and caretaker of various musical instruments for nearly 13 years. A clarinet and an electric keyboard sit in corners of my office. There's a cello in my garage at the moment, waiting for a ride to the repair shop. Nathaniel Ayers asked for an inventory update on Christmas morning, after I picked him up at the South Bay mental health rehabilitation center where he lives. He brought his string bass and trumpet with him. Like I've said before, he's a one-man band, and he never travels light. It's been this way since I met the Juilliard-trained musician in 2005, when he lived on skid row with nothing but a two-string violin and a shopping cart containing his clothes and bedding...