9" (also referred to as "Apartment #9") is a song written by Bobby Austin and Johnny Paycheck.

The track was originally produced by Fuzzy Owen (one of the song's co-writers) under the Tally recording label.

[1] Austin's version of the song was issued on his debut studio album in 1967 also called Apartment No.

Upon arriving to Nashville, Tennessee in 1965, Wynette began pitching songs to various record labels.

[6] The song also became a minor hit on the Billboard Hot Country Singles chart, only reaching number 44.

[4] The song would later be released on Wynette's debut studio album, Your Good Girl's Gonna Go Bad (1967).

[5] It was included among CMT's list of the "Ten Essential Tammy Wynette Songs.