[Clarkson27]

For "Up Till Down" it's clearly not full and taken from the mix on Spotify.
For "Last Christmas", it's not full and I can get better quality by just converting from youtube.

Sorry about that. Unfortunatley tha was all I could find, though I started looking for some of the others and here are my results.

I could only find the I Took A Pill In Ibeza (Timestar Bootleg) on his Soundcloud (Couldnt find any download links whatsoever)
Searching for the Hello (ToTec Bootleg) only led me to a dead zippyshare link so I cant help you there unfortunatley
The Ava Max - So I Am (Scoopheadz Bootleg) is availabe from this link as a 320kbps download Goście nie widzą linków. Zarejestruj się aby zobaczyć linki.
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I could find a couple of the others on YouTube but unfortunatley YT only stores songs as 128kbps files (unless they are from verified artists accounts) so thats the highest quality you are gonna get frm there.
If your searching on Google, a tip i would reccomed is putting an underscoe inseatd of a space to get more exact results. Unfortunatley this only works for Google afaik.