Minor thingy: it labels an organ as a wind instrument, which is unusual. A piano is labelled string instrument, equally unusual. And it says piano quartet consists of a piano, a violin, a viola and a cello, which is not unusual, but definitely not always the case.

And P.I. Tchaikovsky has different spellings: often it's in Cyrrilic, but it also occurs in Latin. His "end area", a weird term for the place of death, however is consequently called "Sankt-Peterburg".

Don't treat that info as consistent, complete or correct.