HAPPENIN’ OTSEGO for TUESDAY, APRIL 11 Enjoy an evening of Jazz at Cooperstown Art Association JAZZ NIGHT—7 p.m. Appreciate Jazz with the Dan Sales Trio at the Cooperstown Art Association, 22 Main Street, Cooperstown. (212) 391-3950 or visit facebook.com/the.mptf BLOOD DRIVE—1 p.m. to 6 p.m. Save up to three lives with the American Red Cross. St. James Episcopal Church, 305 Main Street, Oneonta. Register at redcrossblood.org TAX PREP—6 p.m. to 8 p.m. 1 week left to get taxes prepared with the IRS Volunteer Income Tax Assistance (VITA) program. Hartwick college accounting students, who have been certified by the IRS, with their…