Question: When did this American Southern rock band with multiple guitar players and a heavy metal drummer reach it's peak?
Related documents: [0]  [DOC] Tommy Aldridge (born August 15, 1950) is an American heavy metal and hard rock drummer. Aldridge is noted for his work with numerous bands and artists since the 1970s, such as Black Oak Arkansas, Pat Travers Band, Ozzy Osbourne, Gary Moore, Whitesnake, Ted Nugent, Thin Lizzy, Vinnie Moore & Yngwie Malmsteen. [END] 
[1]  [DOC] Black Oak Arkansas is an American Southern rock band named after the band's hometown of Black Oak, Arkansas. The band reached the height of its fame in the 1970s with ten charting albums released in that decade. Their style is punctuated by multiple guitar players and the raspy voice and on-stage antics of vocalist Jim "Dandy" Mangrum. [END] 
Answer: 
1970s
1970s