America's Got Talent revealed its second set of four seventh-season semifinalist acts during Wednesday night's live broadcast of the NBC reality competition series.

Tim Hockenberry, a singer and musician from San Francisco, CA; Tom Cotter, a standup comedian from Stoney Point, NY; and Turf, a dancer and performance artist from San Francisco, CA, were revealed to have finished as the Top 3 vote-getters after Tuesday night's performance show which featured the season's second group of 12 quarterfinalists performing for home viewer votes, automatically earning them a spot in America's Got Talent seventh-season semifinals.

America's Got Talent host Nick Cannon also revealed that Aurora Light Painters, graffiti artists from San Francisco, CA; Ben Blaque, a crossbow act from Branson, MO; Big Barry, a singer from Ft. Lauderdale, FL; Hawley Magic, an illusionist couple from Shelby, NC; LionDanceMe, a lion and dragon dancing act from San Francisco, CA; Lisa Clark Dancers, a contemporary and classical dance group from Sacramento, CA; and The All Ways, an upbeat cover beat from New York, NY, had received the seven lowest home viewer vote totals.

The announcements then left America's Got Talent judges Howie Mandel, Sharon Osbourne and Howard Stern with the task of deciding which of the two acts that had received the fourth and fifth highest vote totals -- Donovan and Rebecca, a acrobalance act from Stony Brook, NY, or Danielle Stallings, a singer from Richmond, VA -- should become the fourth act to advance to the semifinals.

Howard voted first to send Donovan and Rebecca through to the next round. Sharon spoke her piece next and voted to keep Danielle in the competition. Howie was then left with the determining tie-breaker vote, ultimately deciding Donovan and Rebecca should be the act to advance.

America's Got Talent's next episode will air Tuesday, July 17 and feature the season's next group of 12 quarterfinalists performing for a chance to advance to the semifinals.