Beyoncé wrote a lovely song for her husband Jay Z on their wedding anniversary and shared it with all the subscribers of their new music streaming service, Tidal.

The 33-year-old singer released the balled, "Die With You," on Saturday along with a music video on the streaming site launched last week. The couple, who share a 3-year old daughter together, celebrated their seventh year of marriage on April 4.

The "Drunk in Love" singer teased the video on her Facebook and directed her fans to TIDAL.com to watch the full video. Rihanna also released her new song "American Oxygen" as an exclusive track on the site on Sunday.

The streaming site's costs vary depending on sound quality. The HiFi subscription streams 25 million tracks in lossless quality (Flac 1411 kbps) for $19.99 per month. The Premium subscription streams songs at a "high quality" (maximum AAC 320 kbps). Both subscriptions allow access to more than 75,000 "high quality" music videos.