Let’s Get It On was co-written by Marvin Gaye and Ed Townsend in 1973,whilst Thinking Out Loud was co-written by Ed Sheeran and Amy Wadge in 2015.
Copyright Infringement
If someone reproduces your work, distributes your work, broadcasts your music, mutilates or modifies your work without your authorisation, they have infringed your copyright.
Protection of Copyright
Unlike trademarks, you do not necessarily have to register a copyright–it is a right that accrues by virtue of creation of either literary or artistic works such as books, art pieces, music compositions, movies, photographs, works of architecture and speeches or even sermons.
Copyright
You have authored a best-seller novel or book, created a computer program, created a music piece, a work of art, a building model in architecture, or taken a photograph– these are either literary or artistic works that one can have a copyright over.