Don't forget sidechain compression as a much ( over) used tool in electrohouse...
99% of it is fitting the right sounds together, 1% is mastering. Mastering can't make tracks 'clean-cut', EQ in the mixing stage can. Mastering can't make a half-ass track sound crisp and clean. It all comes down to creating a balanced track with good sounds, which sounds much easier than it is.
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