Everybody knows their audiologo, unfortunately we haven´t composed that :-)
since 2008 we are working for Deutsche Telekom as consultants for brand acoustics. Our assignment includes several fields of corporate acoustics: corporate voice, signal tones and guidelines for integrating the audio logo and more general, sound and music.
update: we produced several tracks with adaptions of the sound logo for the usage in phone applications.
update: we designed signal tones for phones out of the audio logo DNA.