Conversation so far:
What year did Janis die?
1970.
How old was she when she died?
On October 4, 1970, producer Paul Rothchild became concerned when Joplin failed to show up at Sunset Sound Recorders for a recording.
Was Janis with anyone when she died?
Peggy Caserta and Seth Morgan had both failed to meet Joplin the Friday immediately prior to her death.
Had anyone tried to stop Janis from using heroin?
During the 24 hours Joplin lived after this disappointment.
Was Janis Joplin suicidal?
Cooke believes Joplin had been given heroin that was much more potent than normal, as several of her dealer's other customers also overdosed that week.
Did anyone else from her band overdose?
CANNOTANSWER.

Question: After her death, did Janis Joplin's popularity go up or down?
Self-contained rewrite: After Janis Joplin's death, did Janis Joplin's popularity go up or down?