This is not exactly technique, but I believe here is the most appropriate place to post. So... The people who memorize pieces off-piano: How much time do you spend with it? (Can you give a hours/page estimate?) And do you actually consider it a feasible way of memorizing a piece? I'd also like to hear about anyone's "reinforcement cycle", i.e. how do you go on about repeating memorized pieces so they permanently stay in your repertoire?