There are many songs related to or about the number 9 in their titles or themes. Some notable examples include:

• "9 to 5" by Dolly Parton, a famous anthem about work life.
• "Love Potion Number Nine" by The Searchers or The Clovers, a classic song about a magical love potion.
• "Revolution 9" and "#9 Dream" by John Lennon, which are iconic tracks involving the number nine.
• "Nine Lives" by Aerosmith, a rock song named after the album.
• "Nine Below Zero" by Sonny Boy Williamson II, a blues classic.
• "Riot in Cell Block #9" by The Robins, a song with a prison riot theme.
• "Cloud Nine" by Evanescence, referring to a state of happiness.
• "Nine" by Sleeping at Last, an instrumental and other tracks titled "Nine" by various artists.

There are also many playlists and collections of songs showcasing the number nine in various genres and styles, from blues and rock to rap and pop. For songs related to the date 9/11 (September 11 attacks), there are compilations and individual songs addressing that historical event specifically. If there is a specific type of song or context about "9" that is wanted—such as songs with "9" in the title, songs about the number 9 conceptually, or songs about the date 9/11—please clarify for a more targeted list.