What a beautiful thread.
I like classical music, and there are many many pieces of music that remind me of Heaven.
Dance of the Blessed Spirits
https://www.youtube.com/watch?v=xTZgMQ7TVes
The Lark Ascending
https://www.youtube.com/watch?v=ZR2JlDnT2l8
Alessandro Marcello Adagio from his Oboe Concerto in D minor (so very beautiful)
https://www.youtube.com/watch?v=tjLoOmDddgk