"2U" by David Guetta and featuring Justin Bieber is certainly an interesting sound, but mostly because it seems to be a combination of two sounds. You have Justin Bieber's vocals with what sounds like an early 2010's techno beat. The smooth, steadiness of his voice combined with the wide-ranging effects of the beat and instrumentals creates a sound that seems like it's always in flux, never quite ready to settle down. That nervousness gives the song energy and makes for what could very well be another chart topper. Bieber has been doing quite well as a featured guest recently on "I'm the One" and "Despacito," and "2U" might continue the trend.