Filed under: iTunesApple's iTunes music service has strengthened its lead in the US music market, growing to a whopping 26.7% of all music sold in the States, up from 21% a few years ago and 12% in 2007. That's pretty phenomenal growth, buoyed almost certainly by the rising share of digital music versus brick and mortar stores. Digital purchases make up 35.5% of music bought here, also up from 31% the last time Billboard released stats.
So where are all of these music purchases coming from? Best Buy and Walmart, apparently -- both retail outlets saw their shares drop by a few percentage points recently. And of course these are all percentages. I'd bet that lower music
