Use these 13 tips to get your music as close to the 80s as possible.
There are some things you must do and some things you must avoid at all cost if authenticity is important to you.

How to do 80s vocal:    • A Song Is Born Ep.5 | 80s Vocals  Tu...  

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00:00 Intro
00:16 Don't sidechain your bass
00:30 Roll off Bass below 80Hz
01:00 Write music, not beats
01:35 Use Modulations
02:13 Don't overlimit your mix
02:48 Record on tape
03:13 Use limitations creatively
03:46 Don't quantize everything
04:19 No Autotune
05:07 Use Drum machines
06:13 Do live drum overdubs
06:53 Use mainly digital synths (from the era)
07:51 Don't use too much reverb (myth busting)
08:18 Outro