New answers tagged clefs
It's possible that some of Schoenberg's Sprechstimmung notation is close to what you are looking at. In works such as A Survivor from Warsaw or the Ode to Napoleon, he used a single line without a clef, with ledger lines above and below the "staff", and even with accidentals, although these are bit "impressionistic" without an idea of where Do is, and might ...
Check out the chromatic staff -- looks similar to standard notation but the interval from one line to the next space (and vice verse) is always a semi-tone, and thus doesn't imply any particular key.
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