KDDI’s Chaku-Uta Full has now sold 20 million songs since it launched last November, continuing its stellar growth. It hit 10 million back in June.
Here’s what that growth looks like on a graph:
As you can see in the next graph, the number of downloads per day continues to increase as well. (What’s shown is the average downloads per day for the preceding period — ie between June 17 and September 29, downloads went from 10 million to 20 million. 10 million downloads/113 days=about 88,500 per day).
Then, since it’s graph-happy Tuesday, one more showing the number of days it takes KDDI to sell a million songs, and how it’s continually decreased over the last year (pretty much the inverse of the previous graph, really).

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