Six-String Sticker Shock

Electric guitars are like fine wine: the older, the better. Today on Soundcheck, two vintage guitar dealers talk about the booming market for classic instruments — and why it might be headed for a crash. Plus: Elana Arian, a singer-songwriter inspired by classical, jazz and folk traditions, performs songs from her new album, "How to Stand in the Rain." And, a (brief!) preview of this weekend’s 26-hour long Bang on a Can Marathon.