Deleting the same music in both computers

I had everything transferred from my MB to MBP long time ago, and then I accidentally deleted some music from the MBP. So most music I have in MB are same as MBP, but there are some music in MB that is not in the MBP and some music in MBP that is not in MB (because I added some music to MBP afterwards)

So I wanted to delete the music in MB that is in MBP and then transfer the music that is in MB, that is not in MBP, to MBP.