 The series ' next band @-@ centric title , Guitar Hero : Metallica , was released on March 29 , 2009 . Guitar Hero : Metallica is based on the full band experience of World Tour while offering similar features on Metallica 's history and music as found in Guitar Hero : Aerosmith . In addition , Metallica 's album , Death Magnetic , was available as downloadable content for Guitar Hero III simultaneously with the release of the album , with the content being forward @-@ compatible with Guitar Hero World Tour and Guitar Hero : Metallica . Since the PlayStation 2 version does not support downloading , three extra songs were included from Death Magnetic and are as follows : " Broken , Beat , and Scarred " , " Cyanide " , and " My Apocalypse " . A new feature in the game , where the drummer can access a mode called Expert + , has also been added . Expert + mode was implemented to allow faster bass pedal beats , fast to the point where it would normally be out of the playable range of a single bass pedal , and was intended for a dual bass pedal . 
 The series ' next band @-@ centric title , Guitar Hero : Metallica , was released on March 29 , 2009 . Guitar Hero : Metallica is based on the full band experience of World Tour while offering similar features on Metallica <a href='null_genetive' title='1'><mark>'s</mark></a>history and music as found in Guitar Hero : Aerosmith . In addition , Metallica <a href='null_genetive' title='2'><mark>'s</mark></a>album , Death Magnetic ,<a href='been_done' title='3'><mark></mark></a> was available as downloadable content for Guitar Hero III simultaneously with the release of the album , with the content being forward @-@ compatible with Guitar Hero World Tour and Guitar Hero : Metallica . Since the PlayStation 2 version <a href='uninflect' title='4'><mark>does</mark></a> not support downloading , three extra songs <a href='uninflect' title='5'><mark>were</mark></a> included from Death Magnetic and are as <a href='uninflect' title='6'><mark>follows</mark></a> : " Broken , Beat , and Scarred " , " Cyanide " , and " My Apocalypse " . A new feature in the game , where the drummer can access a mode called Expert + , <a href='been_done' title='7'><mark>has</mark></a> also been added . Expert + mode was implemented to allow faster bass pedal beats , fast to the point where it would normally be out of the playable range of a single bass pedal , and was intended for a dual bass pedal . 
The series ' next band @-@ centric title , Guitar Hero : Metallica , was released on March 29 , 2009 . Guitar Hero : Metallica is based on da full band experience of World Tour while offering similar features on outkast  history and music as found in Guitar Hero : Aerosmith . In addition , Meoutkastmixtape , Death Magnetic , been was available as downloadable content fa Guitar Hero III simultaneously w/ tdarelease of the album , wiwidhe content being forward @-@ compatible with Guitar Hero World Tour and Guitar Hero : Metallica . Since the PlayStation 2 version do not support downloading , three extra songs was included from Death Magnetic and are as follow : " Broken , Beat , and Scarred " , " Cyanide " , and " My Apocalypse " . A new feature in the game , where thdarummer can access a mode called Expert + , done also been added . Expert + mode was implemented to allow faster bass pedal beats , fast to the point where it would normally be out of the playable range of a single bass pedal , and was intended ffaa dual bass pedal .