In the '80s, synthesizers characterized pop music. Developments in digital technology meant that synthesizers were cheaper to manufacture and they became affordable for more musicians.
As digital technology became more widespread, music makers were able to use tools that were previously only available in analog form, such as mixers and effects.
Improvements in home production devices and access to digital recording created a home recording revolution. People could record their music without paying to use a professional studio.
The invention of the compact disc improved the quality of sound in recorded music. The recording industry benefited hugely as people replaced entire vinyl collections with compact disc.
Once only used as a tool to correct out-of-tune notes, this technology is now used creatively in many pop songs. The characteristic robotic sound is very easy to recognize.
MP3 technology has made it more convenient to own, distribute and access new music. Illegal downloads of MP3 tracks are costing the recording industry millions of dollars.