user: Question: What is the name of the artist with a Single / Pack of Guitar Hero Track Pack 1?
Columns: ['Year', 'Song title', 'Artist', 'Master recording?', 'Release date', 'Single / Pack']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1983.0, '" Bark at the Moon "', 'Ozzy Osbourne', 'No', 'Apr. 11, 2007', 'Guitar Hero Track Pack 1']
SQL:

assistant: SELECT "Artist" FROM "Table" WHERE "Single / Pack" = 'Guitar Hero Track Pack 1';