Sources & Methodology
Research Sources
The research and written content for Rock Music Timeline were compiled by Joel Mellor. Reference sources include the following books by Joel Whitburn:
- Top 10 Singles Charts 1955–2000
- The Billboard Book of Top 40 Singles
- The Billboard Book of Top 40 Albums, 3rd Edition
- Top R&B/Hip-Hop Singles 1942–2004
Wikipedia provides additional background on artists, recordings, and events. Chart tables include source links and, where applicable, notes explaining how annual rankings were compiled.
Timeline Dates and Chart Positions
The monthly timeline brings together singles, albums, and events. Dates may refer to a recording’s release, chart peak, or the date of an event, as described in the story. A song’s peak chart position is the highest position it reached on the specified chart; it is distinct from its rank in an annual chart.
U.S. pop, U.K., and R&B chart positions represent separate charts and audiences. Story text identifies the relevant chart. Where a date or chart position could not be independently verified during the editorial review, the original research was retained.
Top Artists by Decade
The Top Artists lists on the decade pages are sourced from Tsort.info. These rankings combine worldwide singles and album chart success within each decade. They are not rankings of measured worldwide sales totals.
Frequently Asked Questions
Why does a song or album appear in one year on a best-sellers chart and another year on the timeline?
A recording’s release date and its peak chart date can fall in different months—or different years. Annual rankings may also use different rules for assigning recordings to a year.
On Rock Music Timeline, chart singles generally appear in the month when they reached their peak chart position. Albums generally appear in the month of their release. Exceptions are explained in the story text. When comparing the timeline with a chart, check whether that chart uses release dates, peak dates, or performance during a calendar year.
Why does a rock music website include pop, soul, hip hop, and other genres?
Rock Music Timeline explores rock and roll alongside the broader popular music landscape in which it developed. It includes the styles that influenced rock, grew alongside it, and helped shape the music audiences heard.
The site covers more than classic rock. Pop, soul, R&B, country, disco, hip hop, and other genres are part of that shared history.
Why is a particular artist or band missing?
Rock Music Timeline offers a representative overview rather than a complete encyclopedia. It balances major hitmakers with less commercially successful artists whose influence helped shape the music.
The site contains more than 1,800 stories covering recordings, artists, and events, but it cannot include every important contribution. Suggestions and corrections are welcome through the Contact page.
Where can I find more information about an artist, song, or album?
The sources listed on this page provide a starting point for further research. Wikipedia often includes artist biographies, discographies, and chart information; its references can lead to books, interviews, and other detailed sources.
Official artist websites, record label archives, and museum collections can also provide useful background. When researching dates or chart positions, check which chart and country a source refers to.
Why does the timeline end in 1999?
Rock Music Timeline was created to explore the roots of rock and roll and its development across the five decades from the 1950s through the 1990s. The earlier Rock Roots section introduces some of the recordings, styles, and technological changes that helped set the stage.
Coverage of the 2000s and later decades may be added in the future. For now, the focus remains on developing and refining the history through 1999.