counting the same words within a song added by a user using Django

Hi there.

I am developing a project based on adding songs to the user's library and to the home page.

other users can also purchase the songs like wise people do shopping on eCommerce stores.

Problem:(Question)

The problem that I want to discuss here is that when a user adds a sing through django forms, and now that song is added to the user's personal library.

now what I want to do is :

When the lyrics of a song are added as a record to the "Song" table, the individual words in that song should be added to a 2nd table with their frequency of usage within that song (so the words need to be counted and a signal needs to be created).

Also, when a user adds the song to his/her personal library, all of the words from the song and their frequencies within that song should be added to another table and associated with that user.

how to count same word within a song? 

can anyone help me here?

your help would be appreciated.

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