Need Formula for Counting the Number of times Celltext appears in a list of cells

Hello everyone.

I am looking for a formula that I can use to count the number of times an album from an artist appears within a list of 17,450 other cells. I was wondering if there was some sort of SEARCH function I could use and then I could just drag it all the way down the bottom of the page so I do not have to edit anything.

If you look at the image below, I have the first column as the Title which is the title of the album, second as the artist, and the 3rd row as the number of times it appears within my dataset. The data is organized within a time-series format, however, sorting the data will not affect the count.

I would like this Count to be within each cell of the Longevity column. So if you look at the image, under the 'Title' Column there are 10 rows where it says "Louden Up Now". I would like it to say "10" in each cell of the 'Longevity' Column.

Let me know if anyone has any ideas. Thanks!

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