The 10 songs in the chart below are the most popular songs of 2015 based on the top downloaded and streamed songs from online music retailers. 66 songs entered Top 10 Songs' charts in 2015. "Uptown Funk!" by Mark Ronson Featuring Bruno Mars made the most chart entries at 24. "Lean On" by Major Lazer & DJ Snake Featuring MO had the most chart entries (17) without making the top 10 or the 11th song of the year. The 11th song for 2015 is "Sugar" by Maroon 5. There are two end year charts, the one below, and the Top Songs of 2015 by Vote.