The latest issue of Harmonix’ Rock Band Community Zine included some staggering statistics detailing the performance of the music platform’s downloadable content.

Most notable is the company’s claim of pushing over 28 million Rock Band track downloads to date. The Rock Band store now boasts 345 downloadable tracks by 239 artists, and has seen DLC added for 55 consecutive weeks.

Harmonix also reports that it has hit the 500 total song mark for the Rock Band platform, doing so with weeks to spare on its target of the end of 2008.

Only 6 million songs had been downloaded for Rock Band as of March 20, 2008. Harmonix released the in-game Rock Band music store on that date, and launched Rock Band 2 in September.