Studio is related to Audience. you are likely to find Audience in/at/on Arena. Arena can be used for Fighting. Pit can be used for Fighting. 
you are likely to find Guitar in/at/on Concert. Concert is related to Stage. 
Studio <--RelatedTo--> Audience --AtLocation--> Arena --UsedFor--> Fighting <--UsedFor-- Pit 
Guitar --AtLocation--> Concert <--RelatedTo--> Stage 