That typically meant the audience was more the type of crowd who wanted to see Sammy Davis, Jr. One additional factor is that it turns out the Gyllene Cirkeln was actually a supper club! Which means that it was a restaurant with a stage, and you ate dinner during the show. Maybe he did not make the effort to sing out loud, by some reason." But the lack of vocals on the tape can also be a result of Syd's health and/or attitude at the time. The sound was a result of each musician handling their own amp, and during the show the vocal amps would probably not be adjusted at all. The sound came from the amps on stage and the signal from the vocal microphones were sent to a couple of small vocal amps. "Anders Lind explained that there was no such thing as a PA system back in '67, and there was no one mixing the sound. I found this explanation on a music blog (): Note that the backing vocals couldn't be heard well either. By September 1967, his behavior had already gotten erratic, to the point that the band had to cancel a U.S. But another possibility is that lead vocalist Syd Barrett was singing very quietly and/or not near the microphone. Perhaps there was something systematically off with the band's sound set-up during those months. But there are audience bootlegs of concerts from Rotterdam and Copenhagen from roughly the same time period (September and November 1967), and the vocals on those can barely be heard as well. Now, as to why the recording on "The Early Years" lacked vocals in the first place, that's a bit of a mystery. He did some things to improve the listening quality, such as filling out some under represented frequencies. Furthermore, after I finished editing the files, I handed them to my musical friend MZ. I boosted the volume of that talking drastically, so you can clearly hear what's being said. There isn't much banter between songs, but what little there was was so quiet that it could barely be heard. Personally, I think the end result sounds really great! It's like finding a soundboard recording of the Barrett-era band after all these years. I took the vocals from either the studio versions or the BBC versions, whichever I felt fit better. But I added the vocals for the others that needed vocals. Someone at a Pink Floyd forum named SydMorrison67 had already done this to one song from the concert, "See Emily Play." He did such a great job that I simply used his version. It occurred to me I could strip the vocals from some versions of songs and add them to the Stockholm versions that were lacking vocals. In recent months, I've been doing a lot of audio tinkering with the programs Spleeter and X-Minus. But there's virtually no vocals to be heard whatsoever! It basically sounds like an all-instrumental concert. It's clearly the best Syd Barrett-era live recording in terms of the music. "The Early Years" box set did include a complete show of about 50 minutes recorded at the Gyllene Cirkeln (Swedish for "Golden Circle") in Stockholm, Sweden. The band had a lot of critical and commercial success in 1967, but unfortunately there's no good concert recording of them from when Barrett led them, either officially released or on bootleg. Syd Barrett was Pink Floyd's lead singer and main songwriter from the time the band formed around 1965 until he flamed out around the end of 1967. If you're a fan of early Pink Floyd music, you really need to give this a listen. Here's something I'm very psyched to post.