Amazon.com Inc. yesterday added more music offerings to its Prime Music feature that comes with Amazon Prime membership. Members now have access to hundreds of thousands of new songs and hundreds of new expert-programmed Prime Playlists.

A Prime membership costs $99 per year and offers members free two-day shipping and other benefits, including access to streaming music, TV shows and movies. Prime Music comes with no ads and can be listened to on Kindle Fire HD/HDX devices or through the Amazon Music app for Apple Inc. or Android devices. Prime Music launched on June 12.

“The response we’ve had to Prime Music has far exceeded our expectations and we’re excited to make Prime Music even more valuable for Prime members,” says Steve Boom, vice president of digital music for Amazon. “Prime Music was introduced just over a month ago and we’ve already significantly expanded the Prime Music catalog. Prime members have been telling us how much they love Prime Playlists, so we’re also pleased to offer hundreds of great new playlists to make it easier to enjoy the best of Prime Music.”

While Amazon just started offering music to its Prime members, streaming video has been part of the program for several years. Earlier this year, Amazon surpassed for the first time Apple Inc. and Hulu LLC in the number of videos streamed,  according to data from streaming technology provider Qwilt.

Amazon has said there are “tens of millions” of Amazon Prime subscribers. Scot Wingo, CEO of ChannelAdvisor Corp., which facilitates retailer sells through Amazon and other web marketplaces, has estimated Prime membership at 23 million and said they spend on average four times more than other consumers who shop at Amazon.com.