Question: What genre of music do Sonic Reign and Emperor fall under?

Context paragraphs:
Padshahnama: The Padshahnama (Persian: پادشاهنامه‎ ‎ ) (Chronicle of the Emperor) is a genre of works written as the official visual history of Mughal Emperor, Shah Jahan’s reign.  Most significant work of this genre was written by Abdul Hamid Lahori in two volumes.

Cheng Yuanzhen: Cheng Yuanzhen (程元振) (died 764?)  was a eunuch official of the Chinese dynasty Tang Dynasty.  He was exceedingly powerful early in the reign of Emperor Daizong and was said to, in his attempts to consolidate his power, have killed or demoted a number of key generals and officials on his own whim, and thus drew the hatred from the other officials and generals.  In 763, he was blamed for not warning Emperor Daizong about the Tubo invasion that eventually caused the capital Chang'an to fall to Tubo forces, forcing Emperor Daizong to flee.  Emperor Daizong exiled him, and he died in exile.

Emperor Ming of Liu Song: Emperor Ming of Liu Song ((劉)宋明帝) (439–472), personal name Liu Yu (劉彧), courtesy name Xiubing (休炳), nickname Rongqi (榮期), was an emperor of the Chinese dynasty Liu Song.  He became emperor after his violent and impulsive nephew Emperor Qianfei was assassinated in 465, as he was regarded as more lenient and open-minded, but he soon turned cruel and suspicious as well after becoming emperor, and during his reign, his nephews and brothers were nearly all slaughtered on his orders, greatly weakening the Liu Song state and contributing to its fall in 479, just seven years after his death.

Emperor Wu of Han: Emperor Wu of Han (30 June 156BC29 March 87BC), born Liu Che, courtesy name Tong, was the seventh emperor of the Han dynasty of China, ruling from 141–87 BC.  His reign lasted 54 years — a record not broken until the reign of the Kangxi Emperor more than 1,800 years later.  His reign resulted in vast territorial expansion, development of a strong and centralized state resulting from his governmental re-organization, including his promotion of Confucian doctrines.  In the field of historical social and cultural studies, Emperor Wu is known for his religious innovations and patronage of the poetic and musical arts, including development of the imperial Music Bureau into a prestigious entity.  It was also during his reign that cultural contact with western Eurasia was greatly increased, directly or indirectly.  Many new crops and other items were introduced to China during his reign.

Li Congke: Li Congke () (11 February 885 – 11 January 937), also known posthumously as Emperor Mo of Later Tang (後唐末帝, "last emperor of Later Tang"), Emperor Fei of Later Tang (後唐廢帝, "deposed emperor of Later Tang"), Wang Congke (王從珂) (particularly during succeeding Later Jin, which did not recognize him as a legitimate Later Tang emperor), or Prince of Lu (潞王, a title Li Congke carried prior to his reign), nickname Ershisan (二十三, "23") or, in short, Asan (阿三), was the last emperor of the Later Tang - the second of the Five Dynasties following the fall of the Tang Dynasty.  He was an adoptive son of Li Siyuan (Emperor Mingzong) and took the throne after overthrowing Emperor Mingzong's biological son Emperor Min of Later Tang (Li Conghou).  He was later himself overthrown by his brother-in-law Shi Jingtang, who was supported by Khitan troops (and whose Later Jin succeeded his).  When the combined Later Jin and Khitan forces defeated Later Tang forces, Li Congke and his family members, as well as the guards most loyal to him, ascended a tower and set it on fire, dying in the fire.

Sonic Reign: Sonic Reign is a German black metal band consisting of two members: Ben (vox, strings) and Sebastian (drums).  The band hails a very cold and modern variant of Black Metal influenced by bands such as Satyricon, Emperor and Thorns.

Emperor (band): Emperor is a Norwegian black metal band formed in 1991, regarded as highly influential by critics and emerging black metal bands.  The group split up in 2001, but reunited from 2005 to 2007 for a few festival dates and brief US tours, and again reunited in 2013 to 2014.  The group was founded by Ihsahn (guitar/vocal) and Samoth (then, drums).

Constitution of the Roman Empire: The Constitution of the Roman Empire was an unwritten set of guidelines and principles passed down mainly through precedent.  After the fall of the Roman Republic, the constitutional balance of power shifted from the Roman Senate to the Roman Emperor.  Beginning with the first emperor, Augustus, the emperor and the senate were theoretically two co-equal branches of government.  In practice, however, the actual authority of the imperial Senate was negligible, as the emperor held the true power of the state.  During the reign of the second emperor, Tiberius, many of the powers that had been held by the Roman assemblies were transferred to the Senate.

Duan Ning: Duan Ning (段凝) (died November 8, 928?) , né Duan Mingyuan (段明遠), known as Li Shaoqin (李紹欽) during the reign of Emperor Zhuangzong of Later Tang (Li Cunxu), was a general of the Chinese Five Dynasties and Ten Kingdoms period states Later Liang and Later Tang.  He became an official under Later Liang's founder Zhu Wen (Zhu Quanzhong) based on his sister's being a concubine to Emperor Taizu, and later became a major general during the reign of Later Liang's last emperor Zhu Zhen.  The failure in his ambitious plan to counterattack against Later Liang's northern rival Later Tang enabled Later Tang to defeat and conquer Later Liang, but despite such failure, he became a trusted general under Later Tang's founder Emperor Zhuangzong as well.  After Emperor Zhuangzong's own fall and death, and succession by his adoptive brother Emperor Mingzong of Later Tang (Li Siyuan), Emperor Mingzong exiled Duan and later forced him to commit suicide.

Song Qiqiu: Song Qiqiu (887–959), courtesy name Zisong, formally Duke Chouliao of Chu (楚醜繆公), was the chief strategist of Emperor Liezu of Southern Tang (Xu Zhigao/Li Bian), the founding emperor of the Chinese Five Dynasties and Ten Kingdoms period state Southern Tang.  His strategies were viewed as instrumental in allowing Xu Zhigao to consolidate his power during the latter part of the regency of Xu Wen, Xu Zhigao's adoptive father and regent of Wu, eventually allowing Xu Zhigao to take over the Wu state and take the throne as the emperor of Southern Tang.  After the establishment of Southern Tang, Song had a fall out with Emperor Liezu and largely lost his power, but became powerful again during the reign of Emperor Liezu's son Emperor Yuanzong, until he eventually lost the trust of the emperor and committed suicide in 959.

Supporting paragraphs: Sonic Reign Emperor (band)
Answer: Black Metal