Christina Aguilera has unveiled a brand new musical composition featuring Demi Lovato. Indeed, the track entitled "Fall In Line" will be found on her next album expected for June 15th. This track follows  the two tracks "Accelerate" and "Twice", which will be also found on the upcoming album.

The artist has also announced her tour in United States, which begins September 25th in Miami, to end on November 13th, in St. Petersburg.

Note that The singer wasn't that active since her last album "Lotus", released in 2012.