This is a recording of Nick Mason in the cockpit of an airplane, checking his instruments before takeoff. Some person managed to work out most of what is said:

Friction lock - set.
Mixture - rich.
Propellors - fully forward.
Flaps - set - 10 degrees.
Engine guages and suction - check.
Mixture set to maximum percent - recheck.
Flight instruments...
Altimeters - check both.
Engine gauge - on.
Navigation lights - on.
Strobes - on.
(to tower): Confirm 3-8-Echo ready for departure.
(tower): Hello again, this is now 129.4.
(to tower): 129.4. It's to go.
(tower): You may commence your takeoff, winds over 10 knots.
(to tower): 3-8-Echo.
Easy on the brakes. Take it easy. Its gonna roll this time.
Just hand the power gradually, and it...
(VROOOOOOM)

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what do you teach your children about me?
what do you teach your little children about me?
pimp, thug, bling drug lord of the undergrounded kings
how can you be so sure i won't call down the rain?
what do you teach your little children about me?
you point your gun, wait, hide and run. i see it plain