The BBC discourages any other sound being broadcast at the same time as the pips; doing so is commonly known as 'crashing the pips'. This was most often referred to on Terry Wogan's Radio 2 Breakfast show, although usually only in jest since the actual event happened rarely. Different BBC Radio stations approach this issue differently. Both BBC Radio 1 and Radio 2 generally take a more laid-back approach with the pips, usually playing them over the closing seconds of a currently playing song or a jingle 'bed' (background music from a jingle), followed by their respective news jingles. Many BBC local radio stations also played the pips over the station's jingle before the 2020 rebrand. BBC Radio 4 is stricter. It is an almost entirely speech-based network; incidents at the end of the "Today" programme regularly cause listeners' complaints.