The Google Play Store has changed.

Still can go to the Play Music Store
https://play.google.com/store/music
Will have to scroll way down to see Song of the Day

Link to the album Jake Bugg below - track #2
https://play.google.com/store/music/album?id=Bxr2peqttf3f7qcqrf5yuobolxa

Direct link to song is below
https://play.google.com/store/music/album?id=Bxr2peqttf3f7qcqrf5yuobolxa&tid=song-Ttrrmvjotljkj7xqu37md7hilhu

Please note:
1. Need a Google Account to purchase this.
2. Need a Credit Card - can get by with any expired cards work just fine. There is no charge.