Here are some examples of remixes of famous songs. Some you might know. Take a look for inspiration for your own remix
What is a Remix?
Simply put, a remix is when a producer takes an original track and “remixes” it. This could involve adding new beats, changing the tempo of the song, or weaving in samples from other tracks. Remixes are often used to freshen up existing songs and give them a more contemporary feel.
Remix artists are producers who specialize in creating remixes of existing songs. They usually have an extensive knowledge of music production and are able to take a track and transform it into something entirely new. Remix artists often collaborate with the original artists to create something new.
Elton John, Dua Lipa - Cold Heart (PNAU Remix)
Bastille - Pompeii (Audien Remix)
Lil Nas X - Old Town Road Featuring. Billy Ray Cyrus
Ellie Goulding - Lights (Bassnectar Remix0
Here are 4 examples of mash up's. Notice how they use original parts of the song and put combine them together. There are more on this website
A mashup is a creative work, usually a song, created by blending two or more pre-recorded songs, typically by superimposing the vocal track of one song seamlessly over the instrumental track of another and changing the tempo and key where necessary.
Avicii and Rick Astley -Never Gonna Wake You Up (NilsOfficial Mashup)
Stayin' Alive In The Wall (Pink Floyd + Bee Gees Mashup) by Wax Audio
Sad But Superstitious (Stevie Wonder + Metallica Mashup) by Wax Audio
Adele vs. Daft Punk - Something About The Fire (Carlos Serrano Mix)