The copyright treaties define a shorter minimum copyright term for sound recordings than for other kinds of works. In some countries, if a song is written and recorded in the same year, the copyright in the composition expires 50 years after the death of the last surviving songwriter, but the copyright in the sound recording expires far earlier: 50 years after publication. This means someone can lawfully make and sell copies of any pre-1965 musical recording in those countries for only the cost of a license to the composition.
The United States is one huge exception. It applies the same 95-year copyright term to recordings published in 1972 or later as it does to any other work made for hire published in the same year. It also applies state copyright to pre-1972 sound recording copyright, and state copyright isn't subject to the "for limited Times" wording of the copyright clause of its constitution. Federal law has set a date after which state copyright must expire, but that's in 2067 to give them the equivalent of one full federal copyright term after the introduction of federal sound recording copyright.