Piano Master Class. 7-9 p.m., Fulton Hall, 5845 S. Ellis Ave., 773-702-8484, free. With pianist Ko-Eun Yi.
Lecture. “Greece in Crisis and Critique: The Burden of Crypto-Colonialism.” 6-7:30 p.m., Social Science Research Building, room 122, 1126 E. 59th St., 773-702-8514. Michael Herzfeld, of the University of Oxford, presents.
Lecture. “Income and Wealth Inequality: Evidence and Policy Implications.” 5:30-7:30 p.m., Regenstein Library, room 122A-B, 1100 E. 57th St., 773-834-8936. Emmanuel Saez, of the University of California, Berkeley, presents.
Lecture. 4:30-6 p.m., Cochrane-Woods Art Center, room 157, 5540 S. Greenwood Ave., 773-702-0278. Christopher Heuer, of Princeton University, presents as part of the Smart Lecture Series.
Lecture. 4-6 p.m., U. of C. Law School, Weymouth Kirkland Courtroom Auditorium, 1111 E. 60th St., 773-702-9936. Janet Halley, of Harvard University, presents on reproductive rights and freedom in the U.S.
Oktoberfest. 11 a.m.-8 p.m., Nichols Park, near 55th Street, secc-chicago.org, free admission. A neighborhood tradition, featuring blues performances, a beer garden, a Chicago Park District-run pumpkin patch and a harmonica workshop.
Fourth Ward Senior Ball. Noon-4 p.m., Chicago Lake Shore Hotel, 4900 S. Lake Park Ave., $200 per table, $20 per person. An annual tradition for seniors, featuring a band, comedian and raffle. To buy tickets(…)
Primary Stars Book Club. 11 a.m., Blackstone Library, 4904 S. Lake Park Ave., 312-747-0511. A book club for children ages 6 through 9.