 Tuesday, pianist Anthony Walker plays tribute to Donny Hathaway and Marvin Gaye. Wednesday, pianist and singer Brian Eng does Nat King Cole. Thursday and Friday, Canadian group 480 East. Saturday and Sunday, bassist Ben William Band. The Carlisle Room will be featuring Friday singer Isaac Geralds. Saturday, keyboard player Marcus Johnson. At Keystone Corner tonight, 5 and 7.30 p.m.