The autopsy on Whitney Houston’s body will happen sometime today and we probably won’t know her official cause of death until those toxicology reports come back but TMZ has put their tiny camera on the back of their trained fly and sent it into Whitney’s room at the Beverly Hilton to find out what happened yesterday afternoon.

Their source says that Whitney always took Xanax before a big performance to help numb her nerves a bit. Whitney was supposed to sing at Clive Davis’ pre-Grammy party last night and so she took a few Xanax. Then she decided to take a bath while her hairdresser, stylist and two bodyguards were in the next room. Whitney’s team realized she was in the tub for a long time and so her stylist knocked on the door. There was no answer, so her stylist went into her bathroom and found her unconscious. Whitney’s face was completely underwater and it looked like she had slid under after falling asleep. The stylist called for one of Whitney’s bodyguards and he pulled her out of the tub, but it was too late.

Radar says that none of the bad shit was found in Whitney’s room, but they did find Lorazepam, Valium, Xanax and some sleeping medication. Of course, none of this has been confirmed and it’s only information whispered into TMZ’s ears as a manila envelope filled with a stack of cash passed under the table.

As for Bobby Brown’s ass, he found out about Whitney’s death a few hours before a New Edition show in Mississippi. Bobby Brown went on anyway and after he got on stage, he said “I love you, Whitney” pointing skyward as the crowd cheered… Meanwhile, as Bobby Brown was performing with New Edition, his daughter Bobbi Kristina was in L.A., but she wasn’t in the same room as her mom.

And the Grammys will have a tribute to Whitney during tonight’s show.