Hi @Henry Ng Tsz Kiu! Below you will find in depth review of this haunting piece! First, let me say what your piece reminds of. It reminds me of Chopin's Nocturnes and Rachmaninov musical moments and preludes. Both, in their on right, wrote lush, emotional themes over triplet 8th pattern. In fact, Rachmaninov used that pattern in his 5th prelude. Nonetheless, we can still bass patterns in our own works! I love how you establish the harmony using that pattern over theme. The pattern slowly changes as the theme moves. The chromaticism creates sense of mystery and wonder, by the way. The transition into the B section is exactly what we need to hear: a break down of the thematic material before a new section! (why does this remind of Franz Listz) After we hear the B section, we return to A, briefly, to remind us of the haunting theme we heard at the start. Then it finishes all together. Overall, I thoroughly enjoyed this.