Who came up with the idea for the voice?
The Voice is an American singing competition television series broadcast on NBC. It premiered during the spring television cycle on April 26, 2011, and expanded into the fall cycle with the premiere of the third season on September 10, 2012. Based on the original "The Voice of Holland", and part of The Voice franchise it has aired seventeen seasons and aims to find currently unsigned singing talent (solo or duets, professional and amateur) contested by aspiring singers, age 13 or over, drawn from public auditions.
What is the American TV series The voice based on?
The Voice of Holland
The Voice (American TV series)
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Which television producer came up with the idea for the original version of the voice franchise with VanVelzen?
Johannes Hendrikus Hubert "John" de Mol Jr. John de Mol Jr. John de Mol
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Which Dutch singer came up with the idea for the original version of the voice franchise with John de Mol and thought of the rotating chairs?
VanVelzen Roel van Velzen
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Which Dutch program director pushed John de Mol to come up with the idea of the Blind Auditions for the original version of the voice franchise?
Erland Galjaard
The Voice (American TV series)
https://en.wikipedia.org/wiki/The%20Voice%20%28American%20TV%20series%29
Based on the original The Voice of Holland and part of The Voice franchise, it has aired twenty seasons and aims to find unsigned singing talent (solo or duets, professional and amateur) contested by aspiring singers, age 13 or over, drawn from public auditions.
The Voice (American TV series)
Talpa's John de Mol, creator of Big Brother, first created The Voice concept with Dutch singer Roel van Velzen. 
The Voice (franchise)
 Erland Galjaard, a Dutch program director, asked John de Mol about whether he could come up with a format that went a step further than The X Factor. De Mol then came up with the idea of Blind Audition.
The Voice (franchise)
The rotating chairs concept was invented by Roel van Velzen.
The Voice (franchise)
The American TV show "The Voice" is based on "The Voice of Holland", created by John de Mol and Roel van Velzen. The rotating chairs concept was invented van Velzen, while producer Erland Galjaard encouraged the producers to introduce the concept of blind auditions.