Lady Gaga wowed the world with her outstanding performance last night at the 87th Academy Awards.

Gaga delivered an impressive tribute to The Sound of Music, which celebrates 50 years this year. Songs performed include “The Sound of Music,” “My Favorite Things,” “Edelweiss” and “Climb Ev’ry Mountain.”

Her performance was unlike what fans are accustomed to seeing – and it just goes to show how versatile and talented Gaga really is. Just watch below; you won’t believe it’s her at first!