The song starts with a catchy guitar riff that sets the tone for the rest of the song. The guitar continues to play throughout the song, providing the main musical accompaniment.
Synth
A synth is used to create the pulsating sound that underlies the entire song. The synth also provides the bassline and some of the other electronic sounds that give the song its distinctive sound.
Drums
The drums provide the rhythm for the song and help to keep it moving. The drums are relatively simple, but they effectively serve their purpose.
Vocals
Lady Gaga's vocals are the centerpiece of the song. She sings with a powerful, confident voice that commands attention. Her lyrics are witty and clever, and she delivers them with a playful sense of humor.
Other instruments
In addition to the guitar, synth, drums, and vocals, the song also features a few other instruments, including a saxophone, a trumpet, and a trombone. These instruments add depth and texture to the song, and they help to create a rich, dynamic sound.