Some commom apostrophes:
'course - of course
I voted in ’08. = I voted in 2008.
pick ’n’ mix - short for pick and mix
Who's (Who is)Use an apostrophe with contractions. The apostrophe is placed where a letter or letters have been removed.
Examples: doesn't, wouldn't, it's, can't, you've, etc.
Apostrophes are popular with lyrics, see the following instances of it.
And those are just a few...
Fabolous - She Wildin'
Jason Aldean - Burnin'
Jason Aldean - Just Gettin' Started
Jason Aldean - Tryin' To Love Me
Keyshia Cole - Party Ain't A Party
Miranda Lambert - Smokin' And Drinkin'
Jennifer Hudson - He Ain't Goin' Nowhere
Fabolous (feat. Chris Brown) - 'She Wildin'