Nietzsche's Open Mic Night. 9 p.m. Nietzsche's, 248 Allen St. Come be a part of Buffalo's longest running open mic night. 886-8539. nietzsches.com. Free
Dope Knife. 8 p.m. Mohawk Place, 47 E. Mohawk St. Atlanta-based hip-hop headliner with an array of other hip-hop acts. 312-9279. buffalosmohawkplace.com. Free.
Guitar: The Instrument that Rocked the World: 10 a.m. to 4 p.m. in Buffalo Museum of Science. Explore the history of the guitar and browse some unusual versions. Sciencebuff.org. $11 for adults, $9 for seniors and students.