A brief outbreak of MUNI singing

I was listening to some enjoyable tunes while waiting for the bus this morning, and started singing along. This is very exciting for the girl who hasn't been able to sing in almost a month. So there I was, enjoying the decent acoustics of the empty bus shelter, when I caught air. And then started to cough. And then swallowed my half-dissolved throat lozenge. Perhaps I need to practice a little more before I go to rehearsal tonight.