Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. An audio recording that is a composite of samples from other recordings, usually from different musical styles.
Examples
“Point being, The Smurfs can take solace that it somewhat over-performed this weekend, while the Jon Favreau genre mash-up may go down as one of the bigger whiffs of the summer season.”
“Powerful, world-changing ideas were exchanged during the 2011 Nexus Global Youth Summit, simply from the "mash-up" of young and eager philanthropists and social entrepreneurs who want to change the world.”
The Huffington Post: April Rudin: Next Generation Wealth -- Creating Pathways for Armies of Good
“The ambitious network correspondent sleeping with the president's husband is a mash-up of all those hot White House newsbabes.”
“The mash-up with "Sesame Street" highlights one aspect of Willow Smith's song: It's a black girl proudly declaring her love for her hair.”
The Washington Post: 'Whip My Hair' and 'Sesame Street': A power ballad for black hair
“The video is a shorter mash-up of media figures echoing Democrats 'disapproval of Conway's "Aqua Buddha" ad.”
The Washington Post: Ad of the day: Brown gets Whitman to endorse him (sort of)
“Johnny Hiro vol. 1, by Fred Chao, AdHouse: Charming genre mash-up comics grounded by a wonderful romantic relationship between young lovers trying to make their way in the big city.”
“With its demented mash-up style, Transformers 3 is the strangest, most atomised and hybridised mainstream American movie since Richard Kelly's nutty Southland Tales, which it rivals in its blissful incoherence and in its insane, unselfconscious and probably unachievable pop-culty ambitions.”
“The result is a mash-up of 9 To 5, Strangers On A Train and The Hangover, and as usual, Bateman's dry wit is an oasis of calm in a movie full of showy comic turns from Spacey, Jennifer Aniston, Colin Farrell and others.”
The Guardian: Jason Bateman: 'I've got a great deal of dirt on Jenifer Aniston'
“The creatures peering out from the round hole on the cover of "A Place to Call Home" Candlewick, 34 pages, $16.99 are not mice, exactly, or chipmunks, or rabbits, but a cheerful mash-up of all three.”
“It's a cheerful, seizure-inducing temporal mash-up pulsating along to a bouncy chip-tune soundtrack," says Rob Hearn.”
The Guardian: The 25 best smartphone games of 2011 (so far) – part one
Lists
These user-created lists contain the word ‘mash-up’.
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Digital Terms
Words come and go, perhaps nowhere faster than online. Some industry terms to stay current -- or to remember as they rest in peace.
tweet, cpm, crackberry, nofollow, brick-and-mortar, page view, double opt-in, opt-in, opt-out, mash-up, word of mouth, ctr and 200 more...
Tweets
Looking for tweets for mash-up.

reesetee Ah, of course. Mar 24, 2010
bilby They were steam-driven Interwebs back then. Mar 24, 2010
reesetee Wow. I didn't know they had the Interwebs that long ago. Mar 24, 2010
mollusque Here's another early use as a noun:
"One from 647 feet is a mash-up of soft, grey, shaly rock enclosing fragments of hard slate or argillite."
--W. Whitaker and A. J. Jukes-Browne, 1894, Quarterly Journal of the Geological Society of London 50: 492 Mar 18, 2010
jodi This post traces its etymology to 1859, according to the OED: http://dltj.org/article/mash-up/ Mar 18, 2010
john See also mashup. Mar 26, 2009
ecbrenner "A new breed of Web-based applications created by hackers and programmers (typically on a volunteer basis) to mix at least two different services from disparate, and even competing, Web sites. A mash-up, for example, could overlay traffic data from one source on the Internet over maps from Yahoo, Microsoft, Google or any content provider. The term mash-up comes from the hip-hop music practice of mixing two or more songs." --Webopedia Mar 26, 2009