Table: tribute_joni_mitchell
Columns: track
title
performer
length
original_album

Question: What is the title of the track after 11?
SQL: SELECT "title" FROM tribute_joni_mitchell WHERE "track" > 11

Question: On the title feature brad mehldau as the performer, what is the original album?
SQL: SELECT "original_album" FROM tribute_joni_mitchell WHERE "performer" = 'brad mehldau'

Question: Which track has the original album turbulent indigo?
SQL: SELECT AVG("track") FROM tribute_joni_mitchell WHERE "original_album" = 'turbulent indigo'