The critic G Moon praised it as a marvelous blend of seemingly familiar melody and lyrics, with solo piano accompaniment from start to finish. People found Sun's singing voice fresh, clean and infectiously charming, and it quickly earned her a place in Taiwan's music world. Fresh and clean Sun clearly occupies an enviable position in the singing world.
樂評人二月形容，「天黑黑」巧妙地將耳熟能詳的旋律及文字隱喻放進歌曲中，加上從頭到尾只有鋼琴伴奏，孫燕姿乾淨富感染力的歌聲於是一舉打動人心，安全搶到位置。