You'll Be Back from Lin-Manual Miranda's musical Hamilton (released October 16, 2015) is heavily influenced by several Sixties' pop songs including The Beach Boys' God Only Knows (released July 11, 1966), The Beatles' Penny Lane (released February 13, 1967), and the Turtles' Happy Together (released February 14, 1967). You'll Be Back borrows the staccato quarter note keyboard (harpsichord) part from God Only Knows, as well as the Wrecking Crew's muted bass line and bouncy drum groove (present in the Beach Boys' California Girls as well). You'll Be Back's glee club "da da da" vocals in the chorus are also similar to God Only Know's middle section vocals, and Happy Together's "ba ba ba" vocals, while YBB's guitar part (around 3:00) and pizzicato strings are similar to Penny Lane.
Brave and Roar are lead singles from Sara Bareilles' and Katy Perry's respective fourth albums. Both artists were born and raised in California and have expressed mutual admiration. Brave was co-written by Bareilles and Jack Antonoff of the group fun, and released April 23, 2013. Roar was co-written by Perry, Dr. Luke, Max Martin, Bonnie McKee and Henry Walter, and released August 12, 2013. Roar bears a strong resemblance to Brave, both musically and thematically. Similarities include: tempo (Roar 92 bpm, Brave 90 bpm), key (both are in Bb), chord progression (both move from Bb to G minor), keyboard part (staccato eight note chords during the verses) and theme (i.e. empowerment). In response to the critics (SEE buzzfeed, mashable, entertainmentweekly, latimes), Dr. Luke (@TheDoctorLuke) tweeted that "Roar was written and recorded BEFORE Brave came out." Check out the illustrative mash-up by portkey. Surprisingly, no one has mentioned the resemblance between Brave's keyboard part and co-writer Antonoff's (his group fun's) We Are Young, or for that matter the chord progression of Brave's chorus and Ace of Base's The Sign.
Robin Thicke has acknowledged that for Blurred Lines, he and producer Pharrell Williams were intentionally trying to make "something with that groove," referring to Marvin Gaye's funky 70's classic Got To Give It Up (released March 15, 1977). From the cowbell, vintage-sounding snare and keys to the studio chatter, falsetto crooning and ad libs, Blurred Lines (released March 15, 2013) definitely pushes the boundaries of what qualifies as a "tribute" track.