Great, but wasted cast

Rating: 4/10 (19 August 2016)

Looking at the some of the main cast for this movies; Beyoncé Knowles, Jamine Foxx, Eddie Murphy, and Danny Glover, I really thought "this is going to be good!" and that is exactly how it started. We are first introduced to the 3 beautiful ebony girls, Effie, Deena & Lorrell, whom are fighting to make a career within the music industry. The story quickly picks up as the girls get a manager, goes on a tour with the already established artist James Early, and while fighting against the racial discrimination of the 1960's America ends up breaking though on national radio and TV. We follow the girls from their early beginnings in the ghetto, on their way to fame, but the road is not without its bumps, as different ambitions, managers, internal intrigues, and love-affairs all play a role in making this road especially hard.
Now, the plot and story seems quite good the cast looks good so what is the problem: Is this a musical or an regular movie? I have no idea.
The initial 30-40mins of the movie was quite pleasing, acting is good, and the music is used on stage or in recording studios, and compliments the store and regular dialogue quite well. But at some point the characters turn from talking to each other, to instead singing to each other. And at this point the story starts to get confusing, the music feels forced, and unpleasant. This goes on for quite a while, and peaks with a 15min nonstop song that is so bad that I actually turned down the sound of my TV, so I could still be in the room. Coming towards the ending of the movie, the musical theme fades out, dialogue is once again used, and music in once again used as music.
This shifting between regular movie/musical/regular movie, is really confusing, and it breaks apart the story to a level where I just don't care about it anymore it's highly annoying. maybe it makes more sense if you watch it again, but honestly I don't feel like watching it again, ever.