The fourth edition of "The Bridge School Collection" boasts contributions from artists like Death Cab for Cutie, Trent Reznor of Nine Inch Nails, John Mayer, Regina Spektor, "American Dad" obsession My Morning Jacket, Tegan and Sara, Tom Waits, Band of Horses and Norah Jones.

The tracks were recorded live on various dates, over several of Neil and Peggy Young-founded annual charity concerts.

Ministry, Jerry Lee Lewis, John Mellencamp and Josh Groban are also featured.

The set just became available today via iTunes. Check out the tracklist on the  first volume here, second here and third here.

Mayer's "Battle Studies" and Norah Jones' "The Fall" were just released last week. Tom Waits'"Glitter and Doom Live" dropped Monday: you can hear it in its entirety (sans 35-min. stage banter track) here.

1. Ministry: Here They Come (11/2/94)
2. Ministry: Paisley (11/2/94)
3. John Mellencamp: Jackie Brown (10/29/05)
4. Jerry Lee Lewis: Whole Lotta Shakin' Goin' On (10/30/05)
5. Trent Reznor: Fragile (10/22/06)
6. Trent Reznor: Hurt (10/22/06)
7. John Mayer: Heart of Life (10/27/07)
8. John Mayer: Waiting on the World to Change (10/27/07)
9. Regina Spektor: Ain't No Cover (10/27/07)
10. My Morning Jacket: Gideon (10/28/07)
11. My Morning Jacket: Just One Thing (10/28/07)
12. Tegan and Sara: Dark Come Soon (10/28/07)
13. Tegan and Sara: Like Oh, Like H (10/28/07)
14. Tom Waits and Kronos Quartet: What Keeps Mankind Alive (10/28/07)
15. Tom Waits and Kronos Quartet: The Part You Throw Away (10/28/07)
16. Band of Horses: Marry Song (10/25/08)
17. Band of Horses: The General Specific (10/25/08)
18. Norah Jones: Jesus Don't Cry (10/25/08)
19. Death Cab For Cutie: Cath (10/26/08)
20. Death Cab For Cutie: I Will Possess Your Heart (10/26/08)
21. Josh Groban: Changing Colors (10/26/08)
22. Josh Groban and Neil Young: Harvest Moon (10/26/08)