The (Hollywood) hills are alive with the sound of Gaga!

Lady Gaga reminded the entertainment world that she’s always going to be a force to be reckoned with when she brought the house down at the 87th Academy Awards tonight.

The 28 year old took to the stage to perform an awe-inspiring tribute for The Sound Of Music.

She was congratulated at the end of the performance by the legendary Julie Andrews herself.

The pair shared a heartfelt hug and both were overcome by emotion, clearly big fans of each other’s work.

Twitter erupted immediately after Gaga left the stage, praising her performance and trending several topics associated with The Sound of Music.

Watch the thrilling performance below!

Were YOU impressed with Gaga’s performance?