Filler is material of lower cost or quality that is used to fill a certain television or radio time slot or physical medium, such as a music album.
[1] Similar short films, such as a kitten playing, were also used as interludes or interstitial programs to fill gaps in TV schedules.
[3] Television stations also broadcast filler in the form of music video clips, either from record labels or performance recordings from the studio of one of the television stations, to fill in the empty minutes leading up to the actual program time, approximately 2-5 minutes beforehand.
It was normal, especially in the 1960s, for artists to attempt to "pad out" their material to the standard length by including filler tracks of lesser quality.
[citation needed] Cover versions are often considered to be fillers, though this judgement varies with the amount of creative interpretation and adaption of the original.