Tickets for Ravinia Festival's 2012 summer season went on sale at 5 a.m. on April 26.

The venue's summer schedule includes 120 events that span from June 7 to Sept. 9 and features classical, chamber music, rock, R&B, jazz, country, dance, world and kid's concerts, as well as the summer residency of the Chicago Symphony Orchestra.

Highlighted summer performances include jazz vocalist Nnenna Freelon paying tribute to the legendary Lena Horne, while author Garrison Keillor will bring his live A Prairie Home Companion show to the Ravinia stage the very next night. On July 22, Seal and Macy Gray share a night on the bill. And on September 1, musical legends Hall and Oates will play one of the final weekends of the ground's summer festival season.

Additional musical performances include, Esperanza Spalding; Al Green; Yo-Yo Ma; Sarah McLachlan; Kiri Te Kanawa; Macy Gray; Mat Kearney; Nathan Gunn; Anita Baker; Demi Lovato; Itzhak Perlman; Glen Campbell; Roger Hodgson; The Knights; Gavin DeGraw; Andy Grammer; Jimmy Cliff and more.

For those who have never been to an event at the Ravinia, there are two seating options -- a reserved seat under the pavilion or a GA lawn ticket which is generally under $20 for most shows.

Lawn tickets are only available for Steve Martin and the Steep Canyon Rangers (June 24), Santana (July 9), James Taylor (July 27, 28), Crosby, Stills and Nash (Aug. 3), and Train (Aug. 11). Reserved seat and lawn tickets are available for all other events.

The historic Chicago music venue, which opened its doors in 1904, will also be offering a special Ravinia smartphone app also for connecting with friends while attending a show in the summer of 2012.

Available through most app stores, the Ravinia smartphone app allow you to view the schedule, buy tickets, and use the share your experience tab to connect with friends at the venue.

You can also share your experience of the shows with your friends via email, text, Facebook, Twitter, Tumblr, or even LinkedIn.

Full a full schedule of concerts and/or to buy tickets, visit the Ravinia website.