4 + 20 4 + 20 (1. Session) 4 + 20 (2. Session) 4 + 20 (Harmony Version) - CSN - Seattle - 1974 4 + 20 (Session 1. A) 4 + 20 (Session 1. B) 4 + 20 (Session2) 4 + 20 / Crosby, Stills, Nash & Young 4 + 20 [Crosby, Stills & Nash] 4 + 20-Crosby, Stills, Nash and Young 4 + 20 _CROSBY, STILLS, NASH & YOUNG 4 + 3 4 + 4 (Tessera Tziai Tessera) 4 + 4 = 24