For five decades, U2 has endured not just as a rock and roll band, but as a singular force that has shaped and defined popular culture through their unique and evolving styles, creating a musical blueprint in which countless artists have built the foundation of their sound and philosophy upon.  As with any long and storied career, there have been praise and protest, contention and compromise, and as far as the charts are concerned, triumphs and trials  Though through it all, U2 have remained together, proving that their brotherhood and their belief are as timeless as their music.