How does the 'new user announcement' chord work? And pitching in general? The new user announcement seems to be on a 7th (always attractive for a short amount

How does the 'new user announcement' chord work? And pitching in general? The new user announcement seems to be on a 7th (always attractive for a short amount of time - mainly minor but not always - I've listened for a short amount of time). The deletes seem to be biased towards a minor chord. I might have mixed that all up, but the chord seems to show some dependency. Or it is just late a night.