<< I have read through your posts. >>

Thank you. I truly appreciate you for that.

<< From a production perspective, Artist Performance Tracks or Files, are nothing but audio files. You can play it in BiaB as an orange color track, or drag it to a DAW and do manipulations there. The midi, tabs and notations come along with performance files are not useful if you don't do studies >>

Artist Performance Files or Tracks display as audio files everywhere but in BIAB. In BIAB, Artist Performance Files and Tracks are a proprietary BIAB file that is converted audio so that BIAB can use that audio with all the proprietary and unique features, tools, processes and techniques in BIAB. You can do much more than just play it as an orange file. Once audio has been converted into an Artist Performance File, the Audio Chord Wizard can analyze the chords, create a Tempo Map, determine the key signature, equalize the tempo, automatically populate the Chord Sheet, edit the waveform, normalize it, fade in, fade out, amplify or reduce any section or the whole track, volume automation, transpose, transcribe, tune, repair sour notes, harmonize and convert stereo to mono or mono to stereo. This is just one feature of BIAB working with audio not generated by BIAB. There are quite a few more features in BIAB that can work with audio not generated in BIAB when the audio has been converted to an Artist Performance File.

Underlying midi included with an Artist Performance File is necessary for the performance file to be utilized by other features. As you noted, Notation and tabs is one feature. The Guitar Window is another. This window displays a fretboard and highlights each note and its location on the fretboard as the audio track plays. The Guitar Window has many settings and configurations and it's my understanding it can be tweaked and is very accurate

<< What's really useful, is the sgu chord sheets come along with the performance files. Once you know what chord progression Brent Mason was playing along when the solo track was originally recorded, you can use the solo track in a way of "straight out of the box" in your DAW, without having to chop it and then assemble it. >>
Correct. With practice, using BIAB for this type analysis becomes quick work. For instance, that 16 bar phrase in ag4800.wav can be extracted and converted into an an Artist Performance File and analyzed in the ACW, chords placed in the Chord Sheet, notation with tabs and the Guitar window displaying that 16 bar phrase and it's not going to be chopped together. You will be seeing all the information about that specific clip of audio. Any and every BIAB project can be made into an Artist Performance in seconds.

<< You are correct, the Artist Performance Sets, as well as the Instrumental Studies sets, were very useful in real production, because the original chord progressions are known. There is only one problem: quantity.

For electric guitar solos, slow to middle tempo range (65 ~ 85 bpm), there are not many there can be used. Most of the solos are in the fast tempo range.

If compare performance files to the massive BiaB data files, such as eg4800.wma, we are talking about a swimming pool versus an ocean.

The bad thing about data files is, there is no sgu chord sheet. In other words, the chord progression information is saved in some weird XT2 and ST2 files, which can only be read by BiaB, not by users. And apparently, PG Music doesn't want people to read these types of files. >>

This is true, they guard their proprietary material but they provide access to that proprietary material when a person uses BIAB to work with that material, either as midi, RealTracks or audio not generated by BIAB that's been converted to an Artist Performance File. Everything a user needs to create a custom and accurate SGU file is provided by PG Music to do so. It's simply necessary to do so in the BIAB program.
Once converted to an Artist Performance File, the audio clip the speed can be slowed or made faster without changing pitch. Yes, there is a massive amount of audio data in BIAB to use.

<< RealTrack #1167 is an exception. Somehow, demo sgu "_BALBMS2" is exactly the chord sheet of which the data file was originally recorded based on. I tried to search demo sgu files for other guitar soloist RealTracks, no luck, there is not any. >>

I agree this is correct for the 16 bars that seem to have been recorded specifically for the demo of the guitar and also as RealTrack data material. In regard to demos, there are six SGU Chord Sheets prepared for this RealTrack and associated audio performances for all six Chord Sheets.

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