'Calvin Harris - Outside / Carly Rae Jepsen - I Really Like You' is by Grave Danger/YITT and can be found here: https://www.youtube.com/watch?v=d-LhsxtRr1U
'Taylor Swift - Style / every song ever' is by DJs From Mars and was found under 'Djs From Mars Vs. Taylor Swift Vs. Everybody - Style (multimegamashup)' - but it's not on their YouTube anymore.
'Linkin Park / Smash Mouth - Numb / All Star' is by NPC (nonplayablerecords on SoundCloud), and can be found here: https://soundcloud.com/nonplayablerecords/this-shouldnt-work-why-does-it-work
