There has been past discussion of RaveDJ, but it has improved significantly since then.
In college, I would frequent the Mashups room on turntable.fm and use it as background music for studying, so I was pretty excited to see this.
I spent more time than I'd care to admit when I found it creating new mashups and also comparing/contrasting them to some of my favorite human created mashups.
If you'd like to compare and contrast with some mashups created by humans, I'd encourage you to check out The White Panda, Super Mash Bros, 5 & A Dime, 3LAU, and Kapslap. Fair warning, a lot of this material may only be available on YouTube or SoundCloud.
Finally, I know some of the people that created RaveDJ are on HN and if they happen to see this, a technical write-up of how RaveDJ works would be of great interest to me, and others I'm sure, if you have time.
Not a purely musical mashup, but one of my all-time favorite youtube videos features a mashup song with the beatles, joan jett etc and clips of the 250 top imdb movies in 2 1/2 minutes:
https://www.youtube.com/watch?v=U0x9HtYgVqA
I do not want to know how long that took to create.
Technically I think this is the greatest mashup of all time, although it is mashing up preacher and famous tune rather than two separate tunes https://www.youtube.com/watch?v=pdXek5d2ocw
I'm still traumatised, thrilled, damaged and very excited by this one: https://www.youtube.com/watch?v=QP0mVv0OsCA which you described as "I once played this for my friend and she forced me to turn it off because her heart was racing like she was having a panic attack"
In college, I would frequent the Mashups room on turntable.fm and use it as background music for studying, so I was pretty excited to see this.
I spent more time than I'd care to admit when I found it creating new mashups and also comparing/contrasting them to some of my favorite human created mashups.
Here's an example of one I actually enjoyed. (Note: Ads will autoplay prior to playback) https://rave.dj/G7AS9HjKvBK6Nw
If you'd like to compare and contrast with some mashups created by humans, I'd encourage you to check out The White Panda, Super Mash Bros, 5 & A Dime, 3LAU, and Kapslap. Fair warning, a lot of this material may only be available on YouTube or SoundCloud.
Finally, I know some of the people that created RaveDJ are on HN and if they happen to see this, a technical write-up of how RaveDJ works would be of great interest to me, and others I'm sure, if you have time.