. >> the super star djs, diplo, david guetta, cascade, paul oakenfold, these guys are pulling in millionsi've got a feeling >> online distribution of music broke down the barriers of taste and suddenly everyone was listening to everything. ♪ that tonight's gonna be a good good night ♪ >> with the help of a computer, the past is just cool stuff you could discover. and that's what a whole generation of music-makers do. the 2000s are the age of the machine, but that doesn't mean there's not a search for the soul inside the machine. ♪ tonight's the night ♪ let's live it up ♪ i got my money ♪ let's live it up ♪ go out and smash it ♪ jump on that sofa ♪ let's kick it off ♪ i don't know where -- let it go ♪ ♪ ♪ i feel stressed out ♪ i want to let it go ♪ there's no way out ♪ face down, losing all control ♪ ♪ here we come here we go, we got to rock ♪ ♪ ♪ >>> the next steps. how the trump impeachment trial will proceed when it resumes on monday. >>> also ahead here at this hour, the battle for iowa. democrats vying to replace the u.s. president go all out. the weekend before the country's first ca