A megamix is a medley remix containing multiple songs in rapid succession. There may be only one verse or even just a brief chorus of each song used, sometimes in addition to samples of the same or other songs. To unify the songs together smoothly, a single backing beat may be added as background throughout the megamix, although this is not a must. This backing beat is kept basic so as to simplify mixing and to not compete with the music. These mixes are usually several minutes long at minimum, going up to a half-hour or an hour, or even more sometimes.