example: the director calls for C concert – we go up two half steps, C-C# then C#-D and we start on D. D major scale has 2 sharps in it F# and C# ☺

* Ab concert – you start on Bb (Ab-A, A-Bb) Bb, C, D, Eb, F, G, A, Bb

* F# concert – you start on G# (F#-G, G-G#) [a trick here, G# and Ab are the same just spelled differently, Ab is easier to remember] Ab, Bb, C, D, Eb, F, G, Ab

* D concert — you start on E (D-D#, D#-E) E F# G# A B C# D# E

for this to work for you for every scale, you need to learn all of your key signatures. How many flats or sharps are in each key. Then you can build any scale in any key with ease.