Swimming At The Beach is a single by YuguluP that was self-released in 2015. YuguluP often does Vocaloid covers and originals but sometimes he delves into other genres/styles, in this case post-rock.
The song is on the short side (48 seconds) which is uncommon for post-rock but the track is still good. Very laid back and relaxed. The guitar and melodies are great and are very much the beach/tropical side of the genre. There’s also some really pretty synth work going on too. Awesome track~!
Listen to and download for free here