I believe the Hallmark musical cards came out on the market last year. Well, my mom "Noonie" thought it would be so cool to get Carter one since we all know he loves music. The first of the $5 musical cards was definitely a hit and since then we have received NUMEROUS more from my mom, Aunt Rene, Aunt Kinny, Ya-Ya Jan and mommy of course! These cards are for sure worth the five bucks because of two reasons. 1. The battery live span is at a minimum of 6 months, I kid you not. 2. Pure toddler entertainment and just fun to watch Carter "boogie."