user: Question: What is Song, when Volume:Issue is 15:19-20?
Columns: ['Volume:Issue', 'Issue Date(s)', 'Weeks on Top', 'Song', 'Artist']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['14:18-22', '19 December 1970 - 16 January 1971', 5.0, '" Isn\'t It a Pity "', 'George Harrison']
SQL:

assistant: SELECT "Song" FROM "Table" WHERE "Volume:Issue" = '15:19-20';