Oh, yeah. A sketchbook.
One of my favorite summer sketching spots is a concert in the park. The light is still good early in the evening. The atmosphere is casual. No one cares that you are sketching. The players stay in about the same place for 3-5 minutes.
And . . . I love the energy of the music, the people and the images on my paper.
Once the rhythm of the lines is working, it is possible for me to continue by candlelight -- Hey, YOU can pour wine after dark without spilling a bunch, can't you?
I especially like the feeling in these three sketches of one of my favorite Jazz groups.
Maybe a little sketchbook should be part of my concert-going gear!