T-Mobile Music Bundle Music bundle is the best choice for your on the go music needs. Easily switch from music to hands free phone calls using you new headset. Enjoy extra memory for photos, data files, music, video and more, or just an easy way to back up personal information using your 1GB Micro SD card. Download and backup using your Micro SD card and card reader. We assure you, you do not want to miss out on the T-Mobile Music Bundle.