Here are some songs which mention Texas cities in the titles:
"Austin" - Blake Shelton
"Houston" - Larry Gatlin and the Gatlin Brothers Band
"Amarillo By Morning" - George Strait
"La Grange" - ZZ Top
"Galveston" - Glen Campbell
"Dallas" - Alan Jackson
"Does Fort Worth Ever Cross Your Mind?" - George Strait
"San Antonio Night" - Eddy Raven
"I'm Going Through the Big 'D' (And Don't Mean Dallas)" - Mark Chesnutt
"China Grove" - Doobie Brothers
"Luckenbach, Texas (Back to the Basics of Love)" - Waylon Jennings/Willie Nelson
"Austin" - Blake Shelton
"Houston" - Larry Gatlin and the Gatlin Brothers Band
"Amarillo By Morning" - George Strait
"La Grange" - ZZ Top
"Galveston" - Glen Campbell
"Dallas" - Alan Jackson
"Does Fort Worth Ever Cross Your Mind?" - George Strait
"San Antonio Night" - Eddy Raven
"I'm Going Through the Big 'D' (And Don't Mean Dallas)" - Mark Chesnutt
"China Grove" - Doobie Brothers
"Luckenbach, Texas (Back to the Basics of Love)" - Waylon Jennings/Willie Nelson