Playing this harmonica in 1st Position (starting from blow) gives you a harmonic minor scale.
1st Position: Gypsy, Yiddish, Asian, East European, Tango, Reggae
With a B Harmonic Minor (Bm) harmonica in its holder, starting from blow (exhale), pick out a melody in the midrange of the harmonica.
Try it with an East European slow Waltz or a Tango rhythm.
Strum a Tango rhythm on your ukulele.
With an Bm Harmonic Minor harmonica, blowing gives you an Bm minor chord. Drawing in the lower half of the harmonica gives you an F#7 chord.
While vamping a Reggae groove with the B minor (blow) and F#7 (draw) chords on the harmonica, you are freed up to play accompaniment lines on the ukulele.
Your single notes don’t have to be too precise, as the layout of the harmonica avoids putting discordant notes next to each other. Sometimes, playing a couple of notes together sounds better than a single note.
For more about the Harmonic Minor Harmonica, check out this chord reference guide.