Effects
In the 60s, few people loved the new ways in which you could manipulate sounds in the studio more than Jimi Hendrix, but he is particularly remembered for his extraordinary live performances and prominent use of guitar effects and in particular the wah-wah pedal.
The 60s saw the creation of numerous devices whose sole purpose was to alter, distort and transform sounds. Many which were originally designed for guitarists later became built into recording studio mixing desks and other equipment along with reverb and other effects.
Nowadays adding effects to recorded sounds is standard practise, in fact it is extremely rare to hear any modern recording that has not been processed in some way.
In the following two decades the ability to sample sounds, record performances, mix sounds, generat sound and add effects to aler them would all converge into large computerised systems that do everything but at the end of the 60s these things were all separate and depended on completely separate technologies.