Birthday
Katy Perry
2014
Annual listening-list association, not an original-release-date field. Original release year reconciled with reviewed recording-specific Artist Essentials evidence in v3.6.
Release: 2013
Release: 2013Source checked | Recent carryover
V3.6 reconciles the original release year with the reviewed Artist Essentials entry for this exact retained recording ID. Year precision is used; an album-first release is not silently replaced by a later single, reissue or annual-list year. The original recording is documented in the 2013 release history of PRISM. Only year precision is assigned; later singles, charts, remasters and live versions do not establish its first release. The earlier supplied year 2014 is retained in the attribute-change audit.
The large badge identifies this listening list, not a newly issued recording. Later reissues and renewed chart popularity do not replace an original release date. How years are assigned.
Owner-supplied release annotations
Reported dates in 2014.html. Not independently established; neighboring dates can reflect album/single or regional differences.
PRISM - original Capitol album program
The original 2013 program supports Roar, Dark Horse featuring Juicy J, Unconditionally, Birthday and Walking on Air. Earlier singles are within 2013; later 2014 annual appearances do not date these recordings.
Inspiration and background
Supplied note - not independently verified
This note came with the supplied collection and has not been independently verified.
Perry wanted to create a fun, playful song with double entendres.
Evidence scope: Attributed owner-supplied note; NOT independently verified songwriter testimony
Sources for this information
Owner-supplied 2014.html, position 63
Original annotation, retained with an explicit unverified label
Other appearances and versions
catalog version unspecified
Textual recording candidate, not an audio fingerprint or pressing-level verification.
An annual chart year and an original release date are different. Similar titles may be covers or different masters; no audio fingerprint has been performed.
Sources and scope
External chart association; scope is limited to the cited chart, not full discographic verification
Editorial artist-repertoire classification
Billboard year-end 2014 table (Wikipedia transcription)
Secondary chart transcription: title, artist and annual association only. Not a complete recording or songwriting review.
Browse by year
1960-2025. Each year contains 150 selections.