The track "Summertime" features Elliott Smith on backing vocals.

Entity and relation annotations:
id: 0
type: entity
value: text: Elliott Smith
labels: <Person>
id: 1
type: entity
value: text: "Summertime" 
labels: <Work_of_art>
type: relation
to_id: 1
labels: Person:performs:Work_of_art
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