Tuhia he haere tonu mo tenei whitianga - "E=MC2" i uru ki te nama kotahi i runga i te "Billboard" 200 me nga kape 463,000 i hokona, ko te hoko nui o te wiki whakatuwhera o tana mahi. I te tau 2008, i takaro ano a Carey i tetahi kaiwaiata e hiahia ana ki te ingoa ko Krystal i roto i te "Tennessee" me te ahua o te ahua i roto i te kiriata a Adam Sandler "Kaua e Whakanoho ki te Zohan", e takaro ana ia. Mai i te whakaputanga o te pukaemi, i whakamahere a Carey ki te haere ki tetahi haerenga nui hei tautoko i te "E = MC2". Heoi, i whakakorehia te haerenga i te timatanga o Tihema 2008. I kii a Carey i muri mai kua hapu ia i taua wa, ana ka pakaru te kohungahunga, no reira ka whakakorea e ia te haerenga. I te 20 o Hanuere 2009, i whakatangihia e Carey a "Hero" i te Poari Whakataunga o te Rohe
i muri i te tautohe a Barack Obama hei perehitini tuatahi o Awherika-Amerika o te United States. I te Hōngongoi 7, 2009, i whakatangihia e Carey <unk> me Trey Lorenz <unk> tana putanga o te waiata a The Jackson 5 "I'll Be There" i te ratonga whakamaharatanga mo Michael Jackson.