This is the 9137th most frequent Russian word.
свиридова
"Свиридова" is not a standalone word but a surname in Russian, typically transliterated as "Sviridova."
In this case, 'Свиридова' is functioning as a proper noun, specifically the subject of the sentence.
Свиридова показала нам свои картины.
Sviridova showed us her paintings.
The word 'Свиридовой' is used here as a possessive form indicating authorship.
Сегодня я прочитал книгу Свиридовой.
Today I read a book by Sviridova.
Here, 'Свиридовой' shows possession, relating to music created by someone named Sviridova.