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.

Go on YouTube and look up the commercial by company name and any specific detail about it. You'll find the commercial and, if it doesn't say the name of the song in the description, someone in the comments will have the answer.

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

Google Search can now find the name of a song simply by listening to you hum or whistle the tune. On Thursday, the company unveiled the “hum to search” feature, which is currently available on the Google app and the Google voice assistant. No lyrics, artist name or correct pitch is needed to use the search capability.

Worldcat – This database can be used to search any CD releases and see who the publisher and label behind the release.

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.

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.

To use the new feature on a mobile device, open the latest version of the Google app or find the Google Search widget. Tap on the mic icon and say “what's this song?” or click the “Search a song” button. Then start humming for 10 to 15 seconds.

Ask "What's this song?" or tap Search a song. Play a song or hum, whistle, or sing the melody of a song. Play a song: Google will identify the song. Hum, whistle, or sing: Google will identify potential matches for the song.

Scout around AllMusic.com or read through your favorite music blogs and discover some new artists who are also in your genre. Find out who they've worked with in the past or are currently working with. Add those record labels to your list.

Record labels are companies, large or small, that manufacture, distribute, and promote the recordings of affiliated musicians. Essentially, record labels work to sell the brand of the artist and the products they create.