This is a solution for controlling the NDLR using the keys of an Arturia Keystep.
Not every scale or chord type is mapped, but most are.
The keys from F2 to B2 select the 7 modes
C3 to B3 select the musical keys C to B
The white keys from C4 up select the chord degree (I, II, III, IV, V, VI, VII)
The black keys from C#4 up select the chord type (Alt 1, Alt 2, triad, 7th, 6th)

In my setup, the controlling signals input on midihub port B channel 14, and output on B14 to the NDLR