BbmMaj9 is Bb, Db, F, A and C — with the ninth added on top.
It sounds the same unease with more colour over it. The ninth softens the edge without resolving anything.
Minor tonic — melodic minor, extended.
Also written BbmM9, Bbm(maj9) or Bb-Δ9.

How you get to it. The turn that lands on BbmMaj9 is to : the ii and the V of Bb minor, which is where a minor tonic is usually arrived at rather than simply begun on.
Hear it land:→→
Every note of BbmMaj9 is in Bb harmonic minor and Bb melodic minor.
Each of those is a page: the scale across the neck, and the chords it harmonises into — which is where BbmMaj9 sits in it. Every scale.
Change one note of BbmMaj9 and you have (the minor third becomes the major third), (the major seventh becomes the sixth), (the major seventh becomes the flat seventh), (drop the ninth), (add the eleventh) or (drop the major seventh).
BbmMaj9 is a minor chord — root, minor third, fifth. Minor chords on every root.
The common shapes and the derived voicings come from different places, and both are explained in how this site is built.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.