slotMusic was a brand of microSD memory card developed by SanDisk preloaded with music in MP3 format. They were first available at Wal-Mart and Best Buy stores in October 2008. The selection of songs came from Universal Music Group, Sony BMG, Warner Music Group and EMI Music. As of mid-2011, SanDisk's website listed a total of 14 albums available in the SlotMusic format.