Tonight from 8-10pm there will be a FREE jazz concert by pianist Ptah Williams. The concert will be outside in the Brookings Quadrangle at Washington University's Danforth (Main) Campus. You can't beat the weather right now for an enjoyable outdoor concert!
For more information call (314) 862-0874 or see here.
For directions, go here and type in your starting address or check out a PDF campus map here. To get to the Quad, continue west from the main entrance of campus until you come to a large grassy area--it's pretty hard to miss. ;)