Define Lead single, Promo single, and title tracks

In the music industry, a lead single, promo single, and title track are three distinct concepts related to the release and promotion of music.

A lead single is the first single released from an upcoming album or EP. It is typically chosen because it is considered one of the strongest tracks on the album, and its release is intended to generate buzz and excitement for the upcoming full-length release. The lead single is often the most heavily promoted and marketed track from the album.

A promo single, on the other hand, is a single that is released solely for promotional purposes. It may not be commercially available for purchase, but rather is distributed to radio stations, DJs, and industry insiders to generate buzz and build momentum for the upcoming album. Promo singles are often used to gauge audience reaction and test the waters before the full-length release.

A title track, as the name suggests, is a song that shares the same title as the album or EP it is featured on. The title track is often considered a flagship song for the release, and may be one of the strongest or most representative tracks on the album.

It's worth noting that these terms are not mutually exclusive, and a song can be both the lead single and the title track, for example.