The amazing technique of Sound On Sound, recording on magnetic tape with erase head disconnected so that sound is recorded on top of sound like painting without loss of generation

At your risk. Yes it works. Tascam porta 03 was used by removing the erase head connector. On experiments recording with no input signal there is some loss of treble (demagnetisation due to the bias)on the first pass and less on second pass but after the 3rd pass the sound allready recorded stays practically the same. The amazing is that hiss does not increase after the usual to all tape recording 1st pass. Does this suggest unlimited number of overdubs on the same track without increase of hiss noise? Track 3 and 4 where used as guide tracks listening by headphones and 1 and 2 where overwritten many times with great quality sound. An example may be uploaded soon on Vicky Moriton youtube channel. See also Phil Ramone recording interview on It's My Party double tracking Leslie Gore on the same track, Mike Oldfield making his demo of Tubular Bells by disabling the effect of the erase head on a Bang and Olyfsen reel to reel tape recorder.