Taylor, the pianist beyond genre (age: 80) and still-groundbreaking music of Davis, the trumpeter/conceptualist (dead 18 years) are at major Manhattan venues this week, continuing to provoke and gratify. Cecil Taylor performs at the Blue Note tonight (Thursday, May 28) while “Miles From India,” mixing veterans of Davis’ electric bands with South Asian improvisers, has a four-night stand at Iridium. And last Monday, Davis’ propheticĂ‚Â On The Corner was revisited at Merkin Concert Hall.