Chicago 25 or 6 to 4 7, 21, 1970 Tanglewood ( Official)

Chicago 25 or 6 to 4 Recorded Live: 7, 21, 1970 Tanglewood Lenox, MA More Chicago at Music Vault: Subscribe to Music Vault on YouTube: Personnel: Robert Lamm keyboards, lead vocals Terry Kath guitar, lead vocals Peter Cetera bass, lead vocals James Pankow trombone, percussion Lee Loughnane trumpet, percussio, background vocals Walter Parazaider woodwinds, percussion, background vocals Daniel Seraphine drums