 The audio fidelity of a good wire recording was comparable to acetate discs and by comparison the wire was practically indestructible, but it was soon rendered obsolete by the more manageable and easily edited medium of magnetic tape.Bing Crosby became the first major proponent of magnetic tape recording for radio, and he was the first to use it on network radio, after he did a demonstration program in 1947.Tape had several advantages over earlier recording methods.