Get a FREE $1.29 Amazon MP3 Credit from Pepsi! You need to first follow @Pepsi on Twitter and then send a tweet that includes this text: #PepsiMusicNOW and Pepsi will direct message you an Amazon MP3 code that will give you a $1.29 credit. I got mine code in just a few minutes after tweeting. You can then enter your code at Amazon Here to get your credit. You must redeem your credit by 11:59 pm PST on January 31, 2013.
Seems that this promo code can be combined with other MP3 credit promotions. So you can also get the FREE $2 Amazon MP3 Credit which has been extended until June 23rd, 2012!
Note that Amazon MP3 music is available to customers located and with billing addresses in the United States.