play on what?
Don't do something gay.
Do something really cool, there'll be heaps of other sad, nostalgic shit, be metal.
If you can't be HEAPS metal and do something by: Metallica, Deep Purple (child in time omg), Blind Guradian (the Bard's song), Bon Jovi, DIO, Iron Maiden, Led Zep, The who (baba o'reily)
THEN do something by like Bruce Springsteen (atlantic city or thunder road, UM YES) or Johnny cash (hurt) or... Foo Fighters, PINK FLOYD (time- dark side of the moon, track 4), Journey (don't stop believin' or Wheel in the sky), Even Missy Higgins has some good shit (sugar cane, Night minds, anything from sound of white except scar and special two),
OR be funny and play a part of 'another brick in the wall' by pink floyd, or 'catholic girls' by frank zappa... (probably not though cos it's rude)
Fuck, man. Just be different. Be memorable. Don't be that guy that 'played some sad song at grad... but i forget which one'
BE METAL