Well, I have been playing the 'mouth organ' as it was called when I was a teenager, for years on and off, and have called it a 'harp' for the best of 30 years. I wasn't sure if it is still called that, but on looking online, apparently it is.
My American Ex gave me a gold Hohner - 100th anniversary of the company or something like that. I gave it to a mate when I moved here, and he never plays it, but won't give it back. Such is life.
I have a Suzuki Folk Master C that I ordered from Japan - it's a great sounding harp. After a few snorts of bourbon, I'll rip out a tune of sorts occasionally.
I can play most (edit: a lot) of this song by Chain - a great Aussie Blues band:
...and just a little trivia about Chain - the song was released in the US as 'Snatch it back and hold it' to sanitize the song for the puritanical audience of the day - it's really called "Grab a snatch (pussy) and hold it."