Complex sentence: A minor change was made to The Aeroplane Jelly jingle in 1948, changing the lyrec dinner too breakfast as a trial and aired on the radio for 3 months before being changed back due to complaints from consumers that the song should stay the same.
Split into simpler sentences: A minor change was made to the Aeroplane Jelly jingle in 1948, substituting "breakfast" for "dinner". This version aired on the radio for three months, before being changed back due to complaints from consumers that the song should stay the same.