I like to keep strings on as long as I can (sorry EBMM sales guys). I think they go through a phase of bright sounding when brand new, they warm up as they get stretched and finger grease, and then they start to go dead and it's time to change them. Depends on how much I am practicing/recording, but mine tend to last a month or so before they get dead sounding (and I might break a string and re-clamp it -- for the unwound strings -- a couple times in that month).
Only exception is before a gig. The few times I have not done a string change before a gig, I broke a string on stage. I guess I maybe play a tad harder live (adrenaline or something), and if the string where it clamps into the floyd (or where the string crosses the saddle on a vintage trem) is a month old, I'll break it there live. So, ALWAYS the night before a gig. And then I stretch them well. In the AM on the day of the gig, I try to play them for 15 min or so, and then re-tune them. Then re-tune before the gig as humidity changes / heat of the van might have wacked them out.
Sometimes, depending on what I'm recording, I'll want a clean set as well (for the brightness).
Only exception is before a gig. The few times I have not done a string change before a gig, I broke a string on stage. I guess I maybe play a tad harder live (adrenaline or something), and if the string where it clamps into the floyd (or where the string crosses the saddle on a vintage trem) is a month old, I'll break it there live. So, ALWAYS the night before a gig. And then I stretch them well. In the AM on the day of the gig, I try to play them for 15 min or so, and then re-tune them. Then re-tune before the gig as humidity changes / heat of the van might have wacked them out.
Sometimes, depending on what I'm recording, I'll want a clean set as well (for the brightness).