If you can do some notes, no.I had a brief go it was difficult, I could do A and G before to long, do you think it is worthwhile?
I'd rather go for some (major, minor, whatever) scales from low register to middle and high register without octave key, playing the triad also without OK. (All slurred).
I'd play major and minor scales, arpeggios on the MPC alone,
Like: Starting on a comfortable note, determining the pitch, the gradually adding the notes of a scale. Let's say the note is G (Bb Concert, which is rather high), and you practice a major scale.
Then you play: G-F#-G G-F#-E-F#-G G-F#-E-D-E-F#-G and so on until you play the full scale.
There is a passage in "Developing a personal saxophone sound", where Dave Liebman demonstrates that the changes in singing a pitch are much easier and more exact on an "ee" vowel* than on "ah". *(With a relaxed jaw).