In case you fancy singing along (or you haven't got headphones in the office), here's the lyrics:
"Welcome to Tube Challenge Club It's the District Line Dub!
Come Tube running with the Underground bandits! Bring a mask and a packet of biscuits Bring your log book Bring your plasters I'm the man, King Challenge, the Zone One MASTER! The blaster! The Master Masker! Compared to me there's nobody faster! I'm on a Tube race, I won't mess around That's why you're on the surface and I'm underground!
COMIN' AT YA! On a Jubilee train! Stanmore to Baker Street's the route in my brain I'm the Theydon Bois boy, I'm the Ruislip Ragamuffin Snoop Grenny Greenwich, gonna knock out your stuffin' From Edgware to Epping, that's what I do I'm on a Tube Challenge, I'm telling you! COMIN' AT YA! Changing lines with my expertise! Escalator tourists, stand on the right please!
(Tube challenge) Stand on the right please (Tube challenge) Get out the way. x4
Doooown in the deep-level, what do I see? A Bakerloo driver who's looking right up at me. I say "What?" I say "What?" I say "Queens Park?" H&W's the stop-for-me I'm the champ'ian! The Marylebone man! If I don't do all stations then nobody can I need Wembley! I'm the Zone D Thunderer and You, Mr. Driver, are a Bakerloo blunderer!
A big white train comin' up from the GROUND I write in the logbook as I travel northbound I run overground From Ickenham to Ruislip And head down to Heathrow international flight-strip A Guinness World Record is what I need It's all just a question of running at speed It's all just a question of travelling with ease So 'scuse me, out the way, stand on the right please.
When your train's on time and you're ahead for a while Smile, smile, smile, it's an Underground trial But if the train's late, Keep your head straight, And take the first service from Notting Hill Gate I'm a focused machine when the signal turns green I can cross platforms quicker than you could ever dream Like a beast released from Aldgate East, For the sake of the record, stand on the right please!