Friday, Aug. 7Jazz & Blues in the Park. H-F Park District will offer an evening of jazz and blues featuring The Grady Experience from 6 to 9 p.m. in Irwin Park, 18120 Highland Ave.Freedom Hall Open House. Explore the theater and rental spaces from 3 to 6 p.m. at 410 Lakewood Blvd. in Park Forest. Learn about the theater’s 2026–2027 50th anniversary season, volunteer opportunities and enjoy a free slice of anniversary cake…