I Still Believe by Mariah Carey and Super Bass by Nicki Minaj have been mashed up by Glee Does it sound good to you? Is this a mashup you ever saw coming?
It's really bad, maybe their worst mas-up since it's not even a mash-up, they are not mixed or anything, just a bit of Mariah's song and a bit of Nicki's song and a mixed chorus.
Someone like you / Rumour has it, Americano / Dance again, Thriller / Heads will roll, Survivor / I will survive >>>>>>
Does it sound good to you? Is this a mashup you ever saw coming? 
they've done better