I think the song is in D and you can play with a G harp in 2nd position.
Try this:
The opening horn line is D to C# (da-na da-na da-na da)
2 2' 2 2' 2 2' 2
repeatThe chords go up to G and the horn plays a F to E (3' to 3"). These are tough notes to hit, so try a 4+ to 3 if you can't get that to sound good. This is a half step separation and haromonious with the chord.
The "so nice" dut dut "so nice" dut dut is
4 4 4+ 4+
followed by the walk up
2 3 4 5 6+
into the signature riff
2 6+ 5 4 5 4 3'
2 6+ 5 4 5 4 3'
"when I hold you.."
I'll post the rest later, gotta run right now
The good times last forever
The bad times fade away