The 009 Sound System meme celebrates the unintentional soundtrack of early YouTube, specifically the track 'Dreamscape' by Alexander Perls. Between 2007 and 2010, YouTube’s 'AudioSwap' tool allowed creators to bypass copyright strikes by replacing their audio with a selection of royalty-free songs, with 009 Sound System tracks appearing at the top of the alphabetical list. This led to thousands of low-quality 'How To' tutorials featuring Notepad windows and 'Unregistered HyperCam 2' watermarks all sharing the same electronic trance-inspired background music. Today, the song is a powerful trigger for internet nostalgia, representing a simpler era of the web where DIY screen recordings and synthesized beats reigned supreme.