View source for Directory:Bubbling Under Hot 100 Singles

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{{DISPLAYTITLE: Bubbling Under Hot 100 Singles}}
The '''Bubbling Under Hot 100 Singles''' is a chart released weekly by [[Billboard (magazine)|''Billboard'']] in the United States. It comprises 25 positions that represent songs that are close to charting on the main singles chart, the ''[[Billboard Hot 100]],'' acting as an extension to Hot 100. Many times, however, singles halt their progress on this chart, and never debut on the ''Hot 100''. Other songs initially appear on the Bubbling Under chart only to resurface a year or two later as a more successful hit.

The ''Bubbling Under Hot 100 Singles'' chart can also be seen as a 25-position addendum to the ''Hot 100'', but now only represents the 25 songs below position 100 which have not yet appeared on the ''Hot 100''. If a song were to be ranked at #99 but then moved the following week to a position that is comparable to #105, it would not be eligible for the ''Bubbling Under Hot 100 Singles'' chart because it already appeared on the ''Hot 100'' (although it would be eligible to reenter the ''Hot 100'' if it rebounded to such a level). Throughout the sixties and early seventies songs could appear on the ''Bubbling Under Hot 100 Singles'' chart even after ''Hot 100'' runs; for example [[Helen Shapiro]]'s "[[Walkin' Back to Happiness]]" entered the ''Hot 100'' at #100 on December 4, 1961, yet reentered the twenty-position ''Bubbling Under'' on three separate occasions up until January 13, 1962. The chart has sometimes been reduced to as few as 15 songs (during 1959-1960), but expanded to as many as 35 during the 1960s, particularly during years when over 1000 singles made the ''Hot 100'' pop charts. However, the Bubbling Under charts eventually settled down to 25 positions, from 1992 onward.