Happy 73rd Birthday Bob Hatton who played for the Blues and several other clubs with some distinction it has to be said..
Just got the connection - Brummy or maybe even Cardiff ? Edit: The Hull connection escapes mind ? Forget that - Bob Hatton was from Hull ! Never knew that.
There was a Radio Four programme devoted to this happening in the USA. ****ing hell, even though I’m pissed as a french fart I found it! https://www.bbc.co.uk/programmes/b08hlnjq
Very difficult to do as the Multiple Frequency tones are precisely that, a series of different harmonics for each digit. Interesting stuff.
The connection? Erm... I bought a copy of this performance in HMV down Whitefriargate. Yeah, that'll do.
& their live album was called... https://en.m.wikipedia.org/wiki/From_the_Muddy_Banks_of_the_Wishkah just like the muddy banks of the river's Hull and Humber...