what's the name of this song please !!!

i watch "Hi i'm coconut " (youtube channel) for the quick highlight it makes , so i always keep asking my self about outro song name .. i feel like it's a well known song or is it just a mash up or mix of an old song ?

hear the MP3 so you can know exactly what song i'm talking about and let me know what's the name of that song please i just like it

the MP3 files has 300KB and it's a 24 seconds clip so please dont get lazy to download it and hear it

thanks guys