Remember that chart that pointed out the differences between Google, Apple and Microsoft? Well, it's looking increasingly like Google is intent on filling any and all gaps in its portfolio. Those good old unnamed sources have been talking, originally to CNET last week and to the Wall Street Journal today, and disclosing Google's supposed intent to introduce its very own music store. This would initially encompass a web store where you can stream or download tracks, with a search tie-in that'll get your money into Google's pocket in the fastest possible way. Subsequent plans are said to include Android integration in 2011 -- something that Google rather nonchalantly demoed at its I/O conference last month. Of course, none of this is as yet confirmed, but it looks like Apple and Google will be competing across yet another front -- hold on tight.