The following list represents the most viral tracks on Spotify, based on the number of people who shared it divided by the number who listened to it, from Monday, Dec. 31, to Sunday, Jan. 6, via Facebook, Tumblr, Twitter and Spotify.

UNITED STATES

1. Death Cab for Cutie, "The New Year" (Barsuk Records)

2. The Neighbourhood, "Sweater Weather" (the (r)evolve group)

3. Macklemore & Ryan Lewis feat. Wanz, "Thrift Shop" (Macklemore)

4. MIKA, "Popular Song" (Casablanca Music, LLC)

5. Tamar Braxton, "Love and War" (Streamline Records)

6. CHVRCHES, "The Mother We Share" (Create Control)

7. Various Artists, "I Dreamed a Dream" (Cameron Mackintosh Ltd)

8. Christina Aguilera, "Just a Fool" (RCA Records)

9. Alicia Keys, "Brand New Me" (RCA Records)

10. In This Moment, "Blood" (Century Media Records)

UNITED KINGDOM

1. Abba, "Happy New Year" (Polar Music International AB)

2. Tom Odell, "Another Love" (ITNO/Columbia)

3. CHVRCHES, "The Mother We Share" (National Anthem)

4. 1 Fish Man, "One Pound Fish - Radio Mix" (Warner Bros.)

5. Lulu & The Lampshades, "Cups" (moshi moshi records)

6. Howard Shore, "Misty Mountains" (Watertower Music Under Exclusive License to Decca)

7. HAIM, "Don't Save Me" (Haim Productions Inc., Under exclusive license to Polydor Records)

8. James Zabiela, "The Healing" (Born Electric)

9. Ellie Goulding, "Figure 8 - Xilent Remix" (Polydor Ltd. (UK))

10. Metallica, "Nothing Else Matters" (Blackened Recordings)