Apparently, there is some confusion on the term "backwards masking."
If I understand this term correctly, it is different from reversed play of a song.
In "backmasking," or "backwards masking," when a song is played in normal speed, instances of this would be deliberately-reversed parts of the songs that play forward when played backward . . .
An example of backmasking as I understand it would be a song where the guitar chords sound backwards when you play it. These examples of songs are everywhere, as it is seemingly as popular as the use of guitar effects pedals. It just sounds cool when guitar licks are played backwards on a track, so people do this with regularity.
The instances of messages that appear when the track is played backward seems to be of a different, more coincidental, classification. Searching for these coincidental messages would be like looking for patterns in clouds, or staring at the TV snow for a pattern. There is a possibility that someone could purposely arrange a track forwards to sound in a coherent message when played backwards, but it would be difficult.
Basically, the style is Alien Techno, for lack of a better comparison.
I have this album; I bought it in a bargain bin at a retail store back home in Michigan. I didn't know what to expect before I played . . . there was no advertisement, save the self-described cover art.
The first song on the disc, "1st Transmission," starts with backwards talk.
The first time I played it, I felt creepy. Surprise, huh, that it was in the bargain bin? :D
Now I'm pretty sure that when I reversed it (I had Sound Forge at the time), the message was one of love . . . I cannot remember what exactly was the message, but it was a coherent and clear message when played backwards. This would be a good example of backmasking.
Anyway, I still have the album. If anyone's curious of Delta 76, lemme know.