《HEARTS SOLD SEPARATELY》将带领听众踏上Mariah探索爱情的征程，这张专辑便是她对于爱情的直观感受——Mariah曾经时常感觉自己在爱情中就像一枚玩具士兵，不论再如何为爱奋战，最终也不会被重视，只会像玩具一般被抛在一旁。这一概念从专辑的封面视觉到专辑曲目和歌词都一览无余，Mariah the Scientist在专辑中无疑袒露了最真实的脆弱与最炽热的情感。
01. Mariah the Scientist – Sacrifice (Explicit)
02. Mariah the Scientist – United Nations + 1000 Ways to Die (Explicit)
03. Mariah the Scientist – Eternal Flame (Explicit)
04. Mariah the Scientist – Is It a Crime (Explicit)
05. Mariah the Scientist – Burning Blue (Explicit)
06. Mariah the Scientist – All I Want + In Pursuit (Explicit)
07. Mariah the Scientist – More (Explicit)
08. Mariah the Scientist – Rainy Days (Explicit)
09. Mariah the Scientist – Like You Never (Explicit)
10. Mariah the Scientist – No More Entertainers (Explicit)