Woodshed Wallpaper ™
Free reference materials in music theory and science: things to hang on the woodshed walls! Includes useful Pitch and BPM calculators.
This site is in flux: check back for changes.
A chart giving the BPM of various tempi; as given in common Jazz, and Classical indications.
A chart giving the so-called "Interval Class" name of each chromatic interval pair: each interval, and it's inversion, define one Class.