I looked all the internet to get this question answered, but it's hopeless. How can I play notes with accidentals – sharp, flats/bemol – in my 24-hole tremolo harmonica, I want to play this, How can I play the semitones?
It looks like this particular harmonica is a simply diatonic one, giving available notes in C major of C D E F G A and B, in various octaves.
To be able to play the 'black keys' - # and b, you really need a chromatic harmonica, aka chromonica. This has a button on the right, which when pressed, will sharpen any note you play, blow or draw.
It is actually possible, drawing especially, to bend notes downwards. So you could possibly find the notes you need this way.Can't access the dots, so don't know if some of the accidental notes are blown. If so, it's not going to be easy without that chromonica.