Unusual types of gramophone records#Unusual grooving

The term continuous groove (English " locked groove" ) refers to a technique in the record pressing, in which a plate groove is pressed so that they almost circular runs back into itself, ie, not as usual continues spiraling inward.

Basically, all records have a escape groove, which is recycled into itself. However, this is silent on the control, that is does not include the audio signal. The Beatles album Sgt Pepper's Lonely Hearts Club Band in 1967 was the first record that had housed a very psychedelic sounding noise in the run-out groove of the second page, which is repeated endlessly until you finally turn off the record player. Subsequently, various bands have repeated this technique for various reasons from time to time, often to artfully interrupt such as a song, which extends over more than one disk page to be able to.

Also in the techno area found the art collection in the production of plates exclusively for DJs, where it was not used here at the end, but plates were prepared which consisted only of countless such endless grooves that could then be used for mixing. In this scene you more often then uses the term " Killer Loop", actually a term of the Wave Rider, which denotes a particularly dangerous looping with them. But Loop is also a term used in electronic music, which refers to a recurring sound patterns. "Killer" is here related to the effect that, the monotony of the sound to the listener.

The length of such loops results from the respective playback speed of the record:

• At 331/3 rev / min ( equivalent to about 133 BPM at a 4/4-time )
• At 45 rev / min ( equivalent to 180 BPM in a 4/4-time )

Continuous grooves labels (examples)

• Syncom Productionz
• Rrygular
• Decadent Records
• Dinamuzac