The post-bop pianist Robert Irving III will play a free show at 5:30 PM at the Museum of Contemporary Art (220 E. Chicago), part of the Tuesdays on the Terrace series. Irving is best known for his synth keyboards on several later Miles Davis albums, but Reader critic Peter Margasak called New Momentum, his 2007 comeback album, “sturdy, harmonically ambitious original tunes with radical new arrangements of a handful of classics associated with Davis—Irving doesn’t break any new ground, but his rigor is dazzling.”