Los Angeles, Aug 17 (IANS): The "Straight Outta Compton" musical opened in the NO.1 position at the north American box offices this weekend, with an estimated $56 million in ticket sales.

The universal picture sold more tickets than the next six movies combined this week, Xinhua cited the studio estimates gathered by Rentrak.

Opening in 2,757 theaters, "Straight Outta Compton" made a remarkable $20,345 per screen average.

The $28 million made musical film "Straight Outta Compton" is based at a representative group called NWA.

It became the biggest August opening ever for an R-rated film, and the No.1 musical biopic.

Moviegoers gave "Straight Outta Compton" an "A" grade on audience polling firm CinemaScore.

Critics marked 88 percent positive rating on Rotten Tomatoes. The film played well among younger moviegoers which is about 51 percent of ticket buyers were younger than 30, and black audiences made up to 46 percent.

"Mission: Impossible - Rogue Nation" finished in distant second place, with a $17 million total sales result in its third weekend.

Based on the 1960s TV series in the US, "The Man From U.N.C.L.E," opened in third place, far behind the rap music movie, with $13.5 million in estimated sales.

Rounding out the rest top 10 movies in the US and Canada this weekend were "Fantastic Four" ($8 million), "The Gift" ($6.5 million), "Ant-Man" ($5.5 million), "Vacation" ($5.3 million), "Minions" ($5.2 million), "Ricki And The Flash" ($4.6 million) and "Trainwreck" ($3.8 million).