Criticism of Spotify and 1970s delayed their work being made available on Spotify or any streaming services. Until the end of 2013, Led Zeppelin's music was not available, before the parties reached an agreement in December. In 2015, AC/DC and The Beatles allowed their music on streaming services. In 2018, many songs from the album Get Happy!! by Elvis Costello and the Attractions were removed from the site including New Amsterdam and many others. Icelandic singer Björk initially chose not to release her album "Vulnicura" on Spotify, saying: "This streaming thing just does not feel right. I don’t know why, but it just
Spotify team would lead an Advanced Analytics unit within the company focused on developing data services. In April 2016, Spotify acquired CrowdAlbum, a "startup that collects photos and videos of performances shared on social networks", and would "enhance the development of products that help artists understand, activate, and monetize their audiences". In March 2017, Spotify acquired Sonalytic, an audio detection startup, for an undisclosed amount of money. Spotify stated that Sonalytic will be used to improve the company's personalised playlists, better match songs with compositions, and improve the company's publishing data system. Spotify also acquired MightyTV later in March, an app