NEW YORK -- The expanding audio books market has a major new retailer: Spotify.

On Tuesday, the music streaming service announced its long-rumored audiobook initiative, launching a store that includes more than 300,000 titles, including such popular works as Delia Owens' 鈥淲here the Crawdads Sing,鈥 Michelle Obama's 鈥淏ecoming鈥 and Colleen Hoover's 鈥淚t Ends With Us.鈥 Spotify has previously offered audio books on a limited basis, including J.K. Rowling's 鈥淗arry Potter and the Sorcerer's Stone鈥 and such public domain novels as Mary Shelley's 鈥淔rankenstein鈥 and Jane Austen's 鈥淧ersuasion.鈥

鈥淲e've always believed that the potential for audio is limitless, and have been saying for a while now that our ambition is to be the complete package for everyone's listening needs,鈥 Nir Zicherman, Spotify's vice president and global head of audiobooks and Gated Content, said Tuesday.

鈥淎udiobooks are next to come into the picture because we see a substantial untapped market: while audiobooks represent just a 6-7% share of the wider book market, the category is growing by 20% year over year.鈥

Other available works include Dave Grohl's 鈥淭he Storyteller,鈥 James McBride's 鈥淒eacon King Kong鈥 and Emily Henry's 鈥淧eople We Meet On Vacation.鈥

At least initially, Spotify will sell audio books individually, not on a subscription basis, at prices that are 鈥渃ompetitive鈥 with other sellers. According to a Spotify spokesperson, 鈥淎fter assessing testing and user research, we found that the best initial offering would allow users to purchase books individually,鈥 a policy which 鈥渁llows for pricing flexibility and for more casual listeners to access audio books easily.鈥