The journalist traveled the city 'disguised as' [=dressed like; pretending to be] a beggar.
She 'disguised' herself 'as' a musician to get into the concert hall early.
He tried to 'disguise' his voice on the phone but I could tell it was him.
(..) I'm having a really bad day! Hey, hey, hey! Do not let that go viral! Sorry, there's no way the other kids would believe me otherwise. This is a disguise. The guy's half-blind. He thinks I'm a Cyclops chambermaid. I'm showing mad survival skills, here. And not a small amount of leg. Funny. (..)2013 Percy Jackson: Sea of Monsters