Duke Zhuang II of Qi Duke Zhuang II of Qi Duke Zhuang II of Qi (; died 548 BC) was from 553 to 548 BC ruler of the State of Qi, a major power during the Spring and Autumn period of ancient China. His personal name was Lü Guāng (呂光), ancestral name Jiang (姜), and Duke Zhuang was his posthumous title. He was the second of the two Qi rulers called Duke Zhuang. Before ascending the throne he was known as Prince Guang. Prince Guang was the son of Duke Ling of Qi and his concubine Sheng Ji. In 572 BC Duke Dao of the
What Love Is Made Of three minutes and fifty-five seconds (3:55), "What Love Is Made Of" is an uptempo dance and house track that has been described as "rave-y" and "trance-y". Its instrumentation contains the sounds of pianos and synthesizers. Jordan Sargent of "Spin" observed that it continued the musical style first introduced in Katy's 2012 extended play (EP), "Danger EP", which was "straight-forward house". Idolator's Sam Lansky compared her performance in the song to recording artist Siobhán Donaghy. Critical response to "What Love Is Made Of" was generally positive: most critics noted Katy's vocal performance and commended its sound. Siân Rowe from "NME" was