By squishing them.
Ask for more detail
Answer:
Lead guitar, Backing guitar, Drums, Bass, Vocals, synthesizer/keyboard,
Explanation:
In the introduction you can distinctively hear guitar, drums and bass come in straight away, not long after vocals are brought in. Later on in the song you can hear some sort of synthesizer or keyboard are brought in. There is not any other instruments i can hear in this song.
Hope this answer helped. :)
