Table:
text: List of songs in Rock Band 2
Track listing
Track listing
Song_title Artist Decade Genre Exportable
A Jagged Gorgeous Winter The Main Drag 2000s Indie Rock Separate Download
 Ace of Spades `08  Motörhead 1980s Metal Yes
Alabama Getaway The Grateful Dead 1980s Classic Rock Yes
 Alex Chilton  The Replacements 1980s Rock Yes
 Alive  Pearl Jam 1990s Grunge Yes
 Almost Easy  Avenged Sevenfold 2000s Metal Yes
 American Woman  The Guess Who 1970s Classic Rock Yes
 Any Way You Want It  Journey 1980s Classic Rock No
 Aqualung  Jethro Tull 1970s Progressive Yes
 Bad Reputation  Joan Jett Category:Articles with hCards 1980s Punk Yes
 Battery  Metallica 1980s Metal No
Bodhisattva Steely Dan 1970s Classic Rock Yes

Question: From the list of songs in Rock Band 2, in which decade is the artist the surrogate?