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The Voice<\/a> has been airing for more than a decade since its start in 2011, with the 15th anniversary of its premiere coming up later this month. Currently, the NBC singing competition is in its 29th season<\/a> with Adam Levine<\/a>, Kelly Clarkson<\/a>, and John Legend<\/a> serving as coaches.<\/p>\n The show emphasizes the vocal talent of individuals instead of their images, which is the reason the coaches\u2019 chairs are turned when meeting a new contestant during the Blind Auditions. These singers have come from all walks of life and parts of the world to compete in this competition and build their skills with the guidance of their coaches.<\/p>\n The coaches in the big red chairs rotate each season, with different groups of four superstar artists partaking for each installment (Season 29 has just three coaches<\/a> for the first time). These celebrities understand the hardships that come with building rising stars as artists from the ground up.<\/p>\n Over the years, there have been 23 different coaches on\u00a0The Voice. Some have participated several times, while others have made fleeting appearances. Scroll down for our ranking of all the celeb coaches.<\/p>\n The Voice<\/strong>, Season 29 Finale, Part 1, Monday, April 13, 9\/8c, NBC<\/strong><\/p>\n The Voice<\/strong>, Season 29 Finale, Part 2, Tuesday, April 14, 9\/8c, NBC<\/strong><\/p>\n<\/p><\/div>\n