From the dictionaries, it seems like at least in American English, "sol" (as in "do, re, mi, fa, sol") is always pronounced "sole," but there's a spelling variation "so" is pronounced "so".
- Oxford (or whatever dictionary Google sources): /sōl/
- Merriam-Webster: /sōl/, or less commonly so /sō/
- dictionary.com: /sohl/; also, so
So it seems like if you want to say /soʊ/, you have to spell it like "so"; and if see "sol", you have to say /soʊl/.
This seems strange, though, since I've almost always heard it pronounced like "so", but "sol" is still a pretty common spelling.
For instance, in these two pretty popular songs, it's pronounced "so" (but then again, the lyrics don't write it as "sol"):
- The Sound of Music - Do Re Mi: "sew, a needle pulling thread"
- blackbear - do re mi ft. Gucci Mane: "do, re, mi, fa, so fuckin' done with you, girl"
So are the dictionaries correct and "sol" = /soʊl/ and "so" = /soʊ/, or is pronouncing "sol" as /soʊ/ okay?
(If this isn't broadening the question too much, I'd also like to ask whether "sole" or "so" is the more usual pronunciation.)