2. Your receipt or order ID number from your proof of purchase you should have received after your purchase. If you do not have a receipt in your email, please check your spam folder. If not in your spam folder we can also accept the proof of transaction on your bank or credit card statement. We do not need the whole thing, we just need the numbers associated with the SongPop order.We cannot process any sort of refund request without proof of purchase.. Your typical 100% cotton t-shirt (except for heather colors, which contain 10% polyester). Pre-shrunk to make sure your size is maintained throughout several washes, and a classic fit.. Get Ready for the Holidays with Google Play’s Festive Updates! Listen to more than 100,000 real music clips from artists like Taylor Swift, Katy Perry, One Direction, Bon Jovi and more!.