Anyone know a good song mash-up?

I made a few amateur mash-ups...I combined Cat Stevens/Yusuf Islam's "First Cut is the Deepest" with Semisonic's "Closing Time".

Stayin' Alive In The Wall (Pink Floyd + Bee Gees Mashup)

https://www.youtube.com/watch?v=U13xOvDa19U

Call Me A Hole (A mashup of NIN's "Head Like a Hole" and Carly Rae Jepsen's "Call Me Maybe")

https://www.youtube.com/watch?v=yArRnznVJwY

Psychosocial Baby (Justin Bieber and Slipknot)

https://www.youtube.com/watch?v=kspPE9E1yGM&t=42s

Other amateur mash-ups I made are...

To the Moon and Back by Savage Garden with All Along the Watchtower by Jimi Hendrix
A Whiter Shade of Pale by Procol Harum with Graduation Day by Vitamin C
Shake it Off by Taylor Swift with Paperback Writer by The Beatles
Go Your Own Way by Fleetwood Mac with Are You That Somebody by Aaliyah
Piano Man by Billy Joel with Light in your Eyes by Blessed Union of Souls.