This interesting two-CD best of collects material from the golden era of the premier funk group of the 1970s, including hits like the unstoppable "Boogie Wonderland" and the multi-layered dance floor classic "September." Also featured are lesser-known album tracks such as the smoothly romantic "I'll Write a Song for You" and the irresistibly funky "Serpentine Fire," both from the band's 1977 ALL 'N ALL album.