The songs in the album were all written by Tian, and mixed by the band together. In the first song “Were We Situated’, Tian tells with his sobbing voice about how he tried to walk out from “a situation, which I can’t walk out” into “a situation, we knew it would end”. Being afraid that Tian may collapse, the band takes up the song in the midst of sadness, and let the music weeps for him. “Welcome Mandrake” is another beautiful ballad of the album, with its melody and melancholy building up gradually as they would if experienced by a kid who has lost his way. “Lover Over All” exhibits the kind of silence in the middle of an endless quest. The album then turns more introspective: songs like “The Great Intent” and “Suffocate Tomorrow” trigger the remembrance in the mind of a wide-awake soul under the white roof at midnight till the last song “Pentadance” emerges in daybreak. “This is nighttime” is not the nighttime of infinite darkness, but a nighttime as Lorca portrayed: “in the night silvernight, the night so nightly night”

Lu:d是來自挪威奧斯陸的四人樂團。成員包括主音Tian、結他手Markus、低音結他手Vegard和鼓手Marius。《This is Nighttime》是他們於2006年加盟挪威獨立廠牌Rec90後推出的首張專輯（然而其後樂隊出現了一些人事變動，並改名為Human Heat，故此這也可以說是Lu:d唯一的一張大碟）。國內報章雜誌的音樂評論紛紛把他們比作Radiohead、Coldplay、Keane甚或 Travis。無可否認他們的歌曲有著甚或比英式搖滾更優美的旋律，和更悲傷的聲音，但他們的音樂，也許是由於來自北歐的關係，卻多了一份獨特的寒冷——不是那種嚴峻無情的冰凍，而是有如冬日正午的陽光一樣感觸，卻同時有著一份如在哭泣過後的無力。

《This is Nighttime》的曲，詞皆由Tian一手包辦，並由樂隊一起編排和混音。在首隻曲子“Were We Situated…”裏，Tian用他那像是剛哭過的聲音強裝平靜地由“I’m in a situation, which I can’t walk out…”一直唱到 “We’re in a situation, we knew it would end…”，那感傷讓人惻然。也許害怕Tian會控制不了再次痛哭，歌曲中段在他快要崩潰的時候，結他、鼓、弦樂和鍵琴接上來替代了他，演奏出一段如泣如訴的旋律。

“Welcome Mandrake”是大碟內另一首漂亮的樂章，層層遞進的音樂催動著Tian的歌聲，像是一個迷路的小孩在敲著你心房的門子，希望找到能幫助他的人。在“Lover Over All”裏Tian地也許因為悲傷過度而顯得略為平伏，成為專輯裏很好的轉折，也替其後的“The Great Intent”，“Suffocate Tomorrow”等較婉約的歌曲作引子——就如在晚上一個人在黑暗的房間內哭醒了，躺在床上，望著白色的天花板，開始回想不同的事情，直至在黎明來臨之時，用一首慢慢的，靜靜的 “Pentadance”作結。以Tian雪白的哀傷與流暢的旋律交織成的《This is Nighttime》並非一個無止境的黑夜，而是如詩人洛爾加所形容那樣：「在這白金的夜裏，黑夜遂被夜色染黑」。