The very old iTunes search bar. I still miss it. Basically, because the list of songs was short-ish (in CS terms), it would fiter it based on the current searc

The very old iTunes search bar. I still miss it. Basically, because the list of songs was short-ish (in CS terms), it would fiter it based on the current search textbox what seemed like instantly. I would have a large list and filter it down each time the user types another letter: and concentrate on making that as fast as possible.