While studying as an exchange student at University College London in 1997, Perls worked with the post-rock collective Piano Magic.
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As a consequence of YouTube introducing a system called Audioswap (which replaces the audio of copyrighted soundtracks with something else), a number of songs from 009 Sound System, particularly "Dreamscape" and "Trinity", became widely prominent on many YouTube videos; some YouTubers have declared one or the other song as the unofficial "national anthem" for YouTube.
Daniella and Alexander Perls wrote the melody and lyrics with music by Ercola.
Between 2004 and 2011, the Independent Music Group represented the publishing catalog of the American songwriter Alexander Perls.
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New Yorker Alexander Perls and Londoner Simon Break met each other while Perls was attending school in London, eventually joining up with Glen Johnson in the musical collective, Piano Magic.