I either sit here in silence, or have my trusty playlists.
A different one for different genre of comic I'm working on. It ranges from electronic music for my sci-fi based series, to indie rock for slices of life, grunge rock/heavy metal for my dark/action series and instrumental/cinematic for my fantasy ones, and so on.
So like... just picking the right mood, and the creativity juices are flowing.
I dislike background noise, like someone talking or vehicles vrooming under my window, I can't concentrate.