Data Insight
Led Zeppelin's authorship record is one of the most legally contested in rock history. Several of their best-known early tracks, including 'Whole Lotta Love,' 'The Lemon Song,' and 'Bring It On Home', were found to derive substantially from unacknowledged blues compositions by Willie Dixon and Howlin' Wolf, leading to lawsuits and retroactive credit additions visible in the per-track data today. Jimmy Page's original liner notes also excluded Robert Plant on several tracks; Plant was added retroactively to titles like 'Good Times Bad Times' and 'Communication Breakdown.' The writing balance shifted dramatically on In Through the Out Door (1979), where John Paul Jones co-wrote six of seven tracks, the only Led Zeppelin album on which John Bonham received no writing credit at all, reflecting a late-career shift in the band's creative center.