Tracklist
1. 19890731 (feat. MUZIE) (00:58)
2. Highteen (feat. 이원석) (04:20)
3. Secret of Wave (04:40)
4. It Was Summer (04:55)
5. Your Summer (04:49)
6. Our Night Is More Beautiful Than Your Day (feat. Kim Hyun Chul) (03:34)
7. Island (feat. Spacecowboy) (04:28)
8. Dream (04:02)
9. The Ocean (03:54)
10. Highteen (04:20)
11. The Ocean (Saxophone Version by Jay Kim) (03:54)
12. Highteen (Instrumental) (04:25)
Total length: 48:19