Led Zeppelin is now streaming the 1970 Japanese 7" single of "Immigrant Song" with the B-side "Hey, Hey, What Can I Do". The single is off Led Zeppelin's 1970 album Led Zeppelin III, which much like the previous two was a pretty large success.
The Japanese version of the 7" is being reissued on January 15 as a part of the 50th birthday of Led Zeppelin III. Pre-orders are available here.