Quote:
Originally posted by Sin
I wish I could make predictions like this! What sources do you use (for streaming / sales)? And how do you know Billboards formulas?
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Kworb for sales and airplay.
Spotify, Youtube and now this new on-demand streaming chart from HDD for streaming.
Billboards formula you get a good estimate for from the confirmed numbers and positions Billboard gives us. It's trying and seeing what works and makes sense and then sticking to that.
And they always announce when the change the formula.