Where does “変ロ長調” come from?

変ロ長調 (Japanese) comes from Japanese ロ, from Japanese ロシア, from Russian Росси́я, from Greek Ῥωσία, from Old East Slavic Русь, from Finnish ruotsi, from Proto-Finnic *roocci, from Old Swedish roþs- — to row; to separate; loose, sparse, rare.

変ロ長調 (Japanese): B-flat major

Definitions

B-flat major

Ancestry of “変ロ長調”, step by step

変ロ長調 traces back through 3 separate lines of ancestry.

via Japanese ロ

Step	Language	Word	Meaning
1	Japanese	ロ	si
2	Japanese	ロシア	Russia
3	Russian	Росси́я	Russia
4	Greek	Ῥωσία	—
5	Old East Slavic	Русь	Rus; Ruthenia
6	Finnish	ruotsi	Swedish
7	Proto-Finnic	*roocci	Swede originally anyone from Roslagen
8	Old Swedish	roþs-	related to rowing
9	Old Norse	róðr	rowing
10	Proto-Germanic	rōþrą	oar; rudder
11	Proto-Indo-European	h₁reh₁-	to row; to separate; loose, sparse, rare

via Japanese 変

Step	Language	Word	Meaning
1	Japanese	変	a change
2	Middle Chinese	變	—

via Japanese 長調

Step	Language	Word	Meaning
1	Japanese	長調	major key

Every word from Proto-Indo-European h₁reh₁- →Every word from Old Swedish roþs- →Every word from Proto-Finnic *roocci →