I played a gig last night, and at the end of our set (about 1 hour long), my strings had detuned badly I've *never* had to tune inbetween songs, not even during 3-4hour rehersals. We were playing in a bar located in a basement, which means NO windows. 40-50 people. The bar got REALLY hot while we were playing, and I was wondering if this might be the reason my stings detuned. My E-string tuned to halfway between E and D# according to my tuner. The strings are about a month old but I've been playing regularly (at least 1/2hour a day, and one 3-hour rehersal). Is it the heat, or just the strings (D'Addario Nickel wounds) and bass (Cort B5) combination?