I know this post is a year old, but I’d like to “second” this request. I’d use this “freeze” feature to help me re-pitch the tune. I use Anytune to learn fiddle tunes off old records and those are often not in A=440 concert pitch.
Building on this concept, could Anytune be enhanced to automatically detect the dominant notes (frequencies) of the current “frozen” section? So if I knew the current note to be an “A” and Anytune reported the frequency was 432.87 Hz I know how much to re-pitch the tune to get it to “A=440” concert pitch.