6. Heart Of Gold - Neil Young
https://www.youtube.com/watch?v=pO8kTRv4l3o Though Young has just decided that his music shouldn't be besmirched by being available on streaming services (he hates the low quality sound, which is fair enough really), a significant amount of his material is still available on Spotify. Sadly for his fans who enjoy Spotify, his only number one hit, from 1972's Harvest, is not available to stream, and probably now never will be. 'Heart Of Gold' is one of his most requested songs with good reason, and though it made Young more mainstream than he ever wanted, it remains hugely relatable and the number of times it's been covered is testament to its popularity with other musicians. Just don't expect to see it under Spotify's green label any time soon.