As a certified MSFT's antifan, I’ve noticed Apple’s Music.app uses roughly 580 MiB of RAM for comparison.

itunes on windows still leaks memory like a water hose, it can go up to 4gb listening to online radio

Ooh, I love learning new words. What's an "antifan"?

A portmanteau of anti, and fan. 'Hater' wouldn't be exactly the same.

hater?

Are you making a joke or are you serious?