As Herb mentioned, I suspect that a lot of the quality you hear with RT's and RD's goes beyond the very high quality of the raw files. Mixing the tracks in a way that presents a good soundstage with the "right" amount of balance takes the RT's and RD's to the pro studio sound. A good mix with effects and polished by mastering is what makes many of the songs you listened to shine. There's a learning curve that never ends but it's fun. And as mentioned the BiaB tracks even w/o all of the above sound great.

Bud

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