It was a little cliche in the plot, but the movie itself was quite enjoyable. The music was interesting, and the mashups were pretty nice. It gave a relatively close representation of what a cappella is really like, unlike some other media out there.
Not exactly a bad movie, persay, but as a action/suspense movie that didn't give me any sense of suspense, I wasn't impressed. The concepts they tried to explore, that is time travel, time paradoxes, and what I call time "probabilities", were interesting, but I feel that they didn't actually go anywhere with it. It became a simple movie, where people were shooting at each other. Honestly, if I wanted to see something where people were shooting at each other, there are better movies.