Glad we sorted that out, Don.

However, apart from the use of ET in classical music, whether we date it from the 17th century or 1917, most musicians in other genres would not be using it, eg Highland pipers or blues guitarists. (and before anyone asks, there isn't a B# on the pipe scale - the notes are referred to as G, A, B, C, D, E, F, G & A no matter how they relate to the classical notes).