We don't really know why he was up there, and why he's doing this 'acapella,' but we have to say - this definitely gets us excited to hear his new album!
Rumor is that Kanye West was having some sort of meeting with Mark Zuckerberg at the Facebook headquarters in Palo Alto, CA when he decided to give an impromptu performance of some of his new material!
Check out the video clips of Chain Heavy, Mama's Boyfriend, and Good Ass Job (above)!
The brunette shared a sweet photo with her former flame and penned a heartbreaking caption in his memory.
The late sports star's longtime love reflected on their time together, writing:
"My deepest love goes out to those who saw jose as more than an athlete, but as a passionate, raw human being. The heart break is unbearable. There was so much more to him than anyone could even begin to understand. I'm fortunate enough to have loved and be loved by jose, and his family, for over 3 crazy beautiful years."
Miz Mendoza admitted she will always love the 24-year-old, and told her followers to never take moments with their loved ones for granted, adding: