In the US, songs written between 1923 and 1963 and renewed are protected for 95 years. Works 1964 through 1978 are protected for 95 years. Note that this is for the song itself; recordings from that period are protected under state law.
Copyright protection is required in the US Constitution (among other documents) to be for a limited time, so protection must expire.The laws have changed many times over the past 200 years, so you would need to know when a particular work was published before you can figure out when its copyright would expire, and whether other factors are involved (type of work, nationality of author, copyright notice and renewal, etc).You should also know that some works have no copyright at all and never did.
Federal Copyright Act of 1976
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Singable Songs for the Very Young was created in 1976.
Songs in the Key of Life was created on 1976-09-28.
Silly Love Songs was created on 1976-04-01.
Ironically, "I Write the Songs" was one of a dew songs he sang but didn't write.
The first modern copyrights were for 14 or 21 years, depending on whether the work was created before or after the law took effect. The first US copyrights were for 14 years and renewable for another 14 years if the creator was still alive. Current copyright is for the life of the creator plus 70 years, which has the potential to be 10 times longer than the original 14-year term. Some copyrights on unpublished works in the USA last 120 years, whereas those works were completely without copyright until 1976.
"Beth" by Kiss, originally released on their 1976 album, Destroyer.
You can find many on http://www.popculturemadness.comYou can search by year
How any songs did Keith Relf write between 1971 & 1976
Whiskey Before Breakfast was created in 1976.