The “we’re young”/”let’s live tonight like we’re dying” song is basically a full-fledged subgenre at this point, and Ke$ha makes it clear that she is not messing around with her effort by bringing in Nate Ruess of fun.,  who put out the latest hit in that subgenre.  Actually, the entire songwriting team on this track – Ruess, Dr. Luke, Benny Blanco, Cirkut, and Ke$ha herself – is an all-star team of pop hitmakers.  Dr., Benny, and Cirkut are there for the perfect, electro-tinged pop beat; Nate is there for the inspirational, shout-along worthy tune, and Ke$ha throws in her unique brand of freaky come-ons.  If you love Ke$ha – and you animals know who you are – this will not disappoint you.  You’re probably listening to it ten times a day already.  But if you find her obnoxiously scuzzy, you may be happy to discover that she’s toned it down a bit – or really just corralled it into a more generally palatable package.  The last line of the chorus – “Let’s make the most of the night like we’re gonna die young” – is basically just an explanation of what this song is.  But the rest of the lyrics are more clever than that thesis statement.  “I hear your heart beat to the beat of the drums” calls attention to how polished the production is – the electronic whirrs and whoops are streamlined along with perfectly placed guitar chords to make it sound like actual music.  And “Oh what a shame that you came here with someone” provides a sense of bittersweet longing that makes an otherwise shallow tune that much more poignant.  And lest you think this is not actually Ke$ha, she throws in zingers like “Stripping down to dirty socks” and “That magic in your pants, it’s making me blush” to make it clear that this is her version of “we’re young”/”let’s live tonight like we’re dying.” A-