Dear Editor, From 1970 to mid-1972, I was part of the Tycobrahe Sound Company crew that did all of the Faces shows. Your generous review of Ian McLagan's new box set of the Faces tries very hard to capture the spirit of that era ["Saving Face," Music, Aug. 6]. Trust me, it was more raucous than could possibly be put into words. Only three things made up a Faces tour: travel, show, fun. Fun was by far the largest part of the experience. Looking back over all those years I can tell you from the firsthand experience of having worked with the Rolling Stones, the Who, and lately Paul McCartney, the Faces were the epitome of what everyone dreams of working for a rock & roll band would be like. No band that I can remember ever consisted of such hilarious, highly charged, dedicated but honest musicians than this bunch. I can only offer a sincere thank you to Mac, Kenny, Rod, Woody, and Plonk for the experience of a lifetime, which has lasted until this day.