Two cells a bar on fast-moving harmony: the dense guitar sheet was a quality gap, and the lieder lift but stay wrong

Drafting

Study Overview

The Premise, and What Was Wrong With It

Study 38's three confidently wrong guitar drafts all came from one GuitarSet sheet with fourteen chord positions in sixteen bars, and the Winterreise songs average a chord change and a half a bar. The draft writes one chord per cell and the pipeline hands it one cell per bar, so the bench registered a controlled test: the same pipeline, the same tracker's bars, each item drafted on the bar as read and on the bar split at the beat nearest its middle. The sheet turned out to be one chord a bar with two repeats, so the format was never its ceiling. Its earlier failures were madmom's bar lines; on Beat This small's bars as read, four of six takes score every root right and the fifth misses two.

The Guitar Gap Is Quality

What keeps five of the six dense-sheet takes below good is the quality column: seven of eleven on four takes and two of eleven on one. The sheet carries a dominant seventh and two minor chords, and the drafts write the roots and miss the colours. Splitting the bar changed nothing on eight of the twelve takes, lifted two, and lowered none. The acoustic guitar question therefore moves from the tracker and the grid to the drafting prompt and the per-bar hints, where the chord quality is decided.

The Lieder Lift and Stay Wrong

On the eight shortest Winterreise songs the half grid lifted five, lowered two, and moved the root median from 0.36 to 0.58, two hundredths short of the registered prediction. Every song remained confidently wrong on the half grid, and one dropped hard where 283 cells of four tenths of a second were more than the draft could hold together. The format was part of the ceiling on fast-moving harmony and the audio and the truth are the rest. Unlooked for, one song drafted good on the tracker's bars as read, where the same recording on madmom's bars had scored eighteen of forty-one: the first Winterreise song to reach good in the program, with nothing typed.

Decision and Disclosures

The half grid lifted seven of twenty items and lowered two, so the registered rule recommends no grid change: two cells a bar cost twelve percent more input and buy nothing where chords change by the bar. Three of the forty drafts stopped at the gateway's content filter with empty text, each at the bar grid while the same audio drafted normally at the half grid; they are counted as drafts, left ungraded and not retried. Spend was $1.54 against a $3 fence. One prediction right and three wrong, one of those by two hundredths.