Hilly Fields has at least two songs of its own. Nick Nicely's 'Hilly Fields (1892)' from 1982 is a slice of psychedelia now recognised as a cult classic. As mentioned here before, in an interview at the time he said: '"Hilly Fields is a large park in South London, close to where I live. It's a beautiful place. And the area where I live still retains a lot of the atmosphere of the 1890s - all late Victorian houses, really wonderful. All the songs I wrote are situated in this part of London, Brockley. And Hilly Fields... I used to go there a lot in various stages of high, stoned, tripping, and that's where the song comes from. It's about someone who goes to hilly Fields and then disappears.... and that someone could very well be me, tripping out".
Then there's Lucky Soul's Upon Hilly Fields (2011):
Also from 2011 and filmed on Hilly Fields is the video for My Tiger My Timing's lovely Endless Summer.