Vixen
Penultimate Amazing
Nope.
Sources that aren't you give several other possible translations. In fact, the definition in the musical sense, meaning to adjust a frequency, is not the primary English translation.
As I explained at length, when presented with several possible translations for any given word, the context must be considered. Here the context is a device whose frequency cannot be adjusted. Therefore "tuned" is pretty much the only wrong translation in this case. The fact that you keep presenting Google Translate's version as if it were somehow superlative in all cases suggests you're lying about your understanding of Finnish, as you typically do about such things about which you claim expertise.
Don't judge others by your standards.
Speaking of musical sense, here's a recent article in TS:
Pianonvirittäjä löytää oikean äänen korvakuulolla – “Jokainen piano on uniikki” https://www.ts.fi/teemat/5256564
Google translate:
"A piano tuner finds the right sound by ear - "Each piano is unique"
There is no ambiguity about the meaning of the word used by Lehtola.