Although I can recognize modulations by ear, I'm having difficulties when I attempt to sight-sing a modulating melody that passes from minor into parallel major or vice versa.
An exercise from the book I use goes like this:
Sol Le Sol Fa Sol Sol / Sol La Ti Do Re Re
Or you might prefer this:
P5 m6 P5 P4 P5 P5 / P5 M6 M7 P8 M9 M9
This line is somewhat easy as it reminds me of melodic minor.
Do Ti La Sol Fa Fa / Sol Fa Me Re Do Do
P8 M7 M6 P5 P4 P4 / P5 P4 m3 M2 P1 P1
This one however takes forever because each time I have to alter the third degree, I go back to the root and sing the whole parallel scale. Any tip/advice is appreciated!