Music lovers can see song lyrics when they play songs purchased from Amazon. Lyrics are highlighted as they are sung. Tapping on the lyrics will zip to the appropriate point in the song.
Bezos said these services are only possible because Amazon provides the hardware, operating system, applications, cloud infrastructure and services for the devices. The "hardest and coolest" services such as its "Mayday" service lie at the intersection of "customer delight" and "deep integration through the entire stack," he said.