Take the 2-minute tour ×  I was having problems with my bass
guitars, fender JB and P bass and an epiphone viola. After
several trips to my local music store, the instruments were
checked and I was told they were in tune. They all checked out
on the electronic tuning meter. However when playing along with
cd's, the instruments still didn't sound right. After a good
part of the day experienting, I changed the reference pitch to
445hz. They all sound perfect, no problems with intonation. Why
are the guitars in tune at 445hz and not at 440hz?
share|improve this question Could you give some example songs
that you're playing along with that sound in tune with 445? – 
jadarnel27 Oct 14 '11 at 4:10 add comment  4 Answers  Post-
production often raises the pitch (and increases the tempo) of a
recording. Plus, there is no guarantee that the recording was
made at A440 in the first place. Further, even in classical
music, pitch standards vary regionally. So, it is not surprising
that you would find yourself to be out of