Bouncing stems – same or different volume from stereo mix?

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  • #31764 Reply
    Logika
    Participant

    If the music is for a library which later may or may not need stems, then how important is it that the stems combined exactly equal what was given to them as the stereo master?

    Point being that generally the full stereo mix may have been “pseudo-mastered” (a.k.a home mastering with plugins on the 2-bus). If so, then the stems will not equal the full mix.

    So do you master the full mix, with the stems and/or alts not equalling the mix? Or, do you instead put plugins (i.e. saturation, tape, compressor, whatever) on each stem bus—with nothing on the 2 bus—so that the “mastering” is done via the stem bus processing? (that way the stems would equal the mix). I don’t mean smashed mixes…I’m talking about maintaining as much of a dynamic mix as possible with appropriate and expected loudness.

    Basically I’m asking what is the best way to go.

    And on this topic, do you incorporate any tape / saturation plugins, without issue? I’ve heard that it can cause problems in broadcast use (causing harmonics that may alias), but don’t have a definitive answer on that.

    #38097 Reply
    PAMMusic
    Guest

    If the music is for a library which later may or may not need stems, then how important is it that the stems combined exactly equal what was given to them as the stereo master?

    Point being that generally the full stereo mix may have been “pseudo-mastered” (a.k.a home mastering with plugins on the 2-bus). If so, then the stems will not equal the full mix.

    So do you master the full mix, with the stems and/or alts not equalling the mix? Or, do you instead put plugins (i.e. saturation, tape, compressor, whatever) on each stem bus—with nothing on the 2 bus—so that the “mastering” is done via the stem bus processing?

    I am currently creating stems using this “pseudo-mastering” method for a library and would be really interested on hearing what the best practice is on bouncing them for a library.

    #38102 Reply
    Alan
    Participant

    I’m currently taking the Berklee Online course “Audio/Music Production for Visual Media” and stems was a recent topic. Here is the take from a top industry film score mixer (not final dubbing mixer). All stems MUST combine at fader unity to be equal to the final mix. The point being the dubbing mixer has the option to quickly and easily edit parts of the mix that may be competing with dialog, rather than heavy handedly turning down the entire mix. Every stem must also be autonomous, with no effects bleed etc.
    This of course means there can be no two bus processing on the final mix, it is pre master.
    Based on this “new information,” I consider stems and alt mixes as separate beasts. Moving forward I will continue to master my alternate mixes the same as the main track. If stems are requested, Stem01 will be the full, unmastered mix and the rest of the stems will sum at unity to exactly match Stem01.

    #38104 Reply
    PAMMusic
    Guest

    So in that case when submitting say an acoustic pop track to a library requesting cutdowns and stems, good practice might be to submit:

    – Alts with “pseudo-mastering” stereo bus processing – Full mix, 60secs, 30secs, light mix, no drums etc
    – STEMS without stereo bus processing – full mix, lead guitar, rhythm guitar, bass, drums etc.

    Am i interpreting this correctly?

    #38105 Reply
    Alan
    Participant

    So in that case when submitting say an acoustic pop track to a library requesting cutdowns and stems, good practice might be to submit:

    I interpret “cutdowns and stems” as cutdowns (:30, :15, Sting) and alternate mixes (No Lead, Bed, Drums and Bass). If it were me, I would simply ask the library to tell me exactly what they want.
    “Dear A&R,
    The definition of a stem in open to interpretation across this industry. Would you like a pre-master mix plus stems that combine to equal it, or would you prefer mastered stems treated as alternate mixes?”

    PAMMusic, I think there is a very good chance the A&R will not know the answer to that question without asking around the office or they may even need to call a few clients to find the answer.

    #38109 Reply
    Alan
    Participant

    Here is a direct quote regarding stems from a film industry professional:

    Beware of the distinction between stems in this context—premixes made at the dub by the dubbing mixer—and music stems. You can think of music stems as premixes made by the score mixer rather than on the dubbing stage. Sometimes the word “stems” overlaps and there is momentary confusion about the meaning.

    All the more reason to ask the library what they want.

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