Phaser or Flanger on Drowse

I've read how the effects are technically different (i.e., in terms of how they are produced) but I don't have enough experience to identify which is which when I hear them. Can anyone tell which effect is being used on the Queen song Drowse. Whatever it is, the effect itself is quite obvious right from the beginning and used to great effect (no pun intended) in contributing to the subject matter and emotional atmosphere of the song. Lyrics such as "waves of alternatives wash at my sleepiness" could almost be a description of the effect itself.

Thanks

Originally Posted by: dlwalkeCan anyone tell which effect is being used on the Queen song Drowse.

Sounds like a phaser. There's also a slide being used on the electric guitar part. So that's adding to the effect. But the MXR Phase 90 was introduced in 1974, so it's possible May had one.

https://www.youtube.com/watch?v=OJfFt2i2Yd4

Also, Queen made wide use of physical phasing & flanging by slightly altering the tape speed to get those kind of effects on individual tracks & whole mixes.

https://en.wikipedia.org/wiki/Flanging#Origin

https://www.youtube.com/watch?v=Ko6rA57A-Xg

It could also be a flanger, but I'm not sure it was commerically available when they recorded that tune. Also it sounds more like phaser to me.

https://www.youtube.com/watch?v=wl2zvNW3rSg

Hope that helps!