Zillow TV Spot, 'Night Swimming' Song by Angel Olsen.

Viewers can hear Angel Olsen's track "Free" (via YouTube) playing during the ad. The song comes off of the artist's debut album "Half Way Home," which was released in 2012. While it's not one of Olsen's more popular songs, some out there believe "Free" is one of the best tunes "Half Way Home" has to offer.

"Home" was featured on commercials for Blue Cross Blue Shield Association in the United States in 2011, for IKEA in the Netherlands in 2011, for HRV Home Ventilation in New Zealand in 2012 and for Peugeot in the United Kingdom and in France in 2014.

A jingle is a short song or tune used in advertising and for other commercial uses. Jingles are a form of sound branding. A jingle contains one or more hooks and meanings that explicitly promote the product or service being advertised, usually through the use of one or more advertising slogans.

Transitions Optical TV Spot, 'A Good Feeling: Xtractive' Song by Pigeon John.

Zillow TV Spot, 'Night Swimming' Song by Angel Olsen.

jingle A jingle is a short song or tune used in advertising and for other commercial uses. Jingles are a form of sound branding. A jingle contains one or more hooks and meanings that explicitly promote the product or service being advertised, usually through the use of one or more advertising slogans.

Instrumentals Instrumentals are better used as background music in advertisements, as they complement voice-overs and spoken language better, capturing the viewer's attention. Vocal tunes are used to associate the advertisement with the brand, evoke emotion, and make viewers connect the melody to the video part of the ad.

Instrumental music is generally used as a “soundbed” for commercials with spoken words or voiceovers in the foreground. Other times it's useful for illustrating a humorous situation or somber scenario.

A transition is a passage of music composed to link one section of music to another. Transitions often function as a moment of transformation and may, or may not in themselves, introduce new, musical material.

The song 'Free' by Angel Olsen is playing in the Zillow ad In order to get people to "Compare Homes With Zillow" (via YouTube), the commercial showcases an ambitious and courageous couple sneaking into the backyards of very nice homes and jumping into some stylish swimming pools fully clothed.

Music serves the function of making a product more memorable to viewers, as it is known to "linger in the listener's mind." When used in an advertisement, the content of the ad lingers along with the music.