Love this harp playing! Can anyone tell me more please?

I just love this type of harp playing. Please can someone tell me what harp is being used, in what key, any special techniques being used etc. I’m a novice…

Go to 1:35 and then more further in song:

Much thanks!

Howdy Newbie!
The harmonica sounds like a diatonic, MAYBE in a minor key and probably played in an alternate
position. I haven’t listened enough to tell the key signature…not my style really. Dark and dreary. Blues tends to come out happy with me.