It’s hard to find someone who isn’t into Robert Johnson, generally speaking. I do know some people who prefer the Beatles, and they are definitely fans of straightforward pop music. The Rolling Stones incorporate blues elements, as do Cream, Grand Funk, CCR, and even Pearl Jam occasionally. Those who dislike Robert Johnson tend to be devoted to pure pop. Most other listeners appreciate the blues. This film functions as a tribute to the blues, drawing on the story of Robert Johnson’s crossroads deal, the image of wandering blues musicians from the 1930s, and acknowledging figures like WC Handy—those who made their way down to Memphis and beyond in search of the roots of the music. However, for those strictly into pop, it might feel comparable to *The Karate Kid*, with a guitar instead of martial arts and an instructor playing harmonica. If you enjoy that sort of thing, you’ll likely find this film worthwhile, perhaps even enjoyable. But if your taste runs exclusively to pop, it may not appeal to you; still, consider watching it, since the music you like owes something to what this movie celebrates.

Source on TMDB