The yellowfin tuna is among the larger tuna species, reaching weights over 180 kg (400 lb), but is significantly smaller than the Atlantic and Pacific bluefin tunas, which can reach over 450 kg (990 lb), and slightly smaller than the bigeye tuna and the southern bluefin tuna.
Their fourth album, which features the track Stairway to Heaven, is among the most popular and influential works in rock music, and it helped to secure the group's popularity. Page wrote most of Led Zeppelin's music, particularly early in their career, while Plant generally supplied the lyrics. Jones' keyboard-based compositions later became central to the group's catalogue, which featured increasing experimentation.
Nicky Hopkins played the piano on this track. Hopkins was a renowned session player who appeared on tracks for The Who, The Rolling Stones, The Beatles and many others. Robert Plant wrote the lyrics, which were a response to critics who claimed their previous album, Led Zeppelin III, wasn't really rock and roll. Led Zeppelin III had more of an acoustic, folk sound, and Plant wanted to prove they could still rock out.