After briefly being known as Alternative One before launch, A-One launched on 1 August 2005. The channel initially broadcast alternative and rock music, including the establishment of a Rock Alternative Music Prize [ru]. In 2011, Alexander Tolmatsky [ru] took over and changed the channel's format to hip-hop music. Tolmatsky departed in 2013; the channel won several national awards during this time and launched a national party series, "A-One Hype Nights", featuring popular Russian and foreign artists.
In 2016, Gazprom-Media acquired a 49 percent stake in the channel, which was rebranded as TNT Music on 31 May.
