Giant Steps made simple by colour coding.

(For Bb trumpet)

Db	E7	A	C7	F	//	B-	E7
A	C7	F	Ab7	Db	//	G-	C7
F	//	B-	E7	A	//	Eb-	Ab7
Db	//	G-	C7	F	//	Eb-	Ab7

Play this colour within the scale of Db major

Play this colour within the scale of A major

Play this colour within the scale of F major