Steve Langham wrote:And how do you incorporate this playing into your general practice and learning? i.e., do you stay at this slow pace for a new piece as you 'get it under your fingers' but then when familiar with it up the tempo or you use this pace regularly even after you are familiar with it?
Usually, I'll start by committing the whole piece to memory first. Then I'll play through at a "normal" tempo for the piece a couple of times, making mental notes of where I need to work on the most first. The biggest problems, if you will.
For those sections I'll then play them and only them with slow practice until I feel I "have" them. I'll then play the piece again and repeat the process, going to the parts which needed less attention than last time but still need attention.
Arguably it might be easier if I just did slow practice from the start, bar by bar, but I don't think that's necessary unless of course the whole thing requires it as it's complex or unfamiliar to how my fingers have previously been contorted.
As to using slow practice when the piece is learnt: Yes, occasionally those difficult parts will need reinforcing - especially if I've not played the piece for a while, in which case I'll use slow practice again.
I should say that I don't always use a metronome for this. For really hard passages I'll go free-time where each position / beat / note could be there for 3-4 seconds or more. All depends really.
Negative, I am a meat popsicle.