Which two non-jazz* bands/acts/artists have released studio albums over the longest period of time without interruption, since the first album? With this period without interruption I mean: since the first album release, the act has (at least) released one studio album every following year.
So this is more about the number of years without interruption instead of the number of albums.
* I deliberately say "non-jazz" because in jazz many artists kept recording and releasing, almost non-stop.
** The question I ask and the answer I have in mind come forth from self made trivia, so I admit that I am not entirely sure of the answer. I have two particular bands in mind, but if anyone knows other acts with at least as many or even more years of such releases as described, please enlighten me!
First hint: These two bands have not achieved the same in this context.
So there's one clear winner, and one number two.
EDIT: see the following discussion:
Sixes guessed two acts which have a larger number of uninterrupted years than the bands I had in mind, namely Johnny Cash and Tangerine Dream! Impressive stuff:
Johnny Cash: 1957-1988. 32 uninterrupted years of studio albums released!
Tangerine Dream: 1970-1992: 23 uninterrupted years of studio albums released!
So to my original question should now be added: next to Johnny Cash and Tangerine Dream. Read on to see guesses and hints.