The Voice is an American singing reality competition television series that premiered on NBC on April 26, 2011. Based on the original The Voice of Holland and part of The Voice franchise, it has aired 27 seasons and aims to find unsigned singing talent. The winner is determined by television viewers voting by telephone, internet, SMS text, and iTunes Store purchases of the audio-recorded artists' vocal performances. The original panel featured Christina Aguilera, CeeLo Green, Adam Levine, and Blake Shelton.