The Lounge 009 - Your weekly playlist by Christopher Prowse

When you multiply any number by 9, then add the resulting digits and reduce them to a single digit, it always becomes a 9.

Any number that was initially increased by a factor of 9 loses its own identity and instead takes on the characteristics of the 9.

No other number has that quality.

With all of that in mind, it's time to crank playlist #9.