I always thought it was oxenpepper!
I remembered the Typewriter tune earlier - must find it on good old YT. Reminds me of a crash course I did aeons ago, in shorthand and typing. Run by two very spinstery old ladies, almost certainly a couple, though such things weren’t much mentioned then - who wouldn’t have looked at all amiss in a Miss Marple (Joan Hickson version.).
We had to practise typing to a strictly even rhythm, to some Glen Miller tune, which was very jolly - punctuated often of course by carriage return! - bang, ding! - as in the tune.
*one of them had won a typewriting championship - about 100 words a minute, IIRC!