Jingle Magazine started in 1971 and had a run of 152 chapters. it was run by the Guillermo family who had various positions in this magazine. Guilbert Guillermo was the original editor and chief and most of his ideas did help into making Jingle chordbook maazine. it succeded so much that other Jingle Clan publications like Jingle Keys, Jingle Organ, Jingle extra, JIngle Beatles songbook, Jingle Bells and lastly was Jingle extra hot. In which they ventured into a showbiz/entertainment magazine.
somehow (not sure ha) Gilbert faded out of Jingle and the rest of his siblings are still publishing Jingle content under the name of "Jackpot Publications" eto ata yung mga "Best of Jingle vol xx".
i grew up with Jingle magazine and its publications and all i can say is that they were cutting edge and all writers and contributors, graphics guys were ahead of their time. and also with DZRJ and other recording companies they were part of the success of how Pinoy Rock and other original Pinoy music came into popularity.