Compression / Compressor

A compressor enhances the already dominant frequencies

Drums: Big live sound
Double the drums onto a separate track, compress heavily and add this track slowly into the mix

Drums: Hard studio beat:
Double kick and snare onto a separate track, compress heavily and eq with a big smile
add this track slowly into the mix

Bass: kick and guitar lock:
Compress both using the same stereo compressor: short attack times = more kick, longer attack times = more guitar, set release to 1/8 for starters

randomness