Format: 

Writer, A. (Copyright year). Title of song [Recorded by A. A. Artist]. On Title of album [Medium]. Location: Label. (Date of recording if different from song copyright date)

Examples: 

Anderson-Lopez, K. & Lopez, R. (2013). Do you want to build a snowman? [Recorded by K. Bell, A. L. Monn and K. Lopez]. On Frozen: Original motion picture soundtrack [mp3 file]. Burbank, CA: Walt Disney Records. (2012)

In-text: (Anderson-Lopez & Lopez, 2013, track 2)

Notes: 

If the writer is not the recording artist, include "Recorded by" and the artist's name in square brackets immediately after the song title followed by a period.

Source:
APA - 7.07, no. 52