Nice easy latin tune by Sonny Rollins.  Here are some nice resources to help you learn the tune!

St Thomas pdf

St. Thomas-C Instruments (.pdf)

St. Thomas-Bb Instruments (.pdf)

St. Thomas-Eb Instruments (.pdf)

St. Thomas Roman Numeral Changes

For some great left-hand piano voicings to use on St. Thomas, go to:

http://www.learnjazzstandards.com/learning-jazz/left-hand-comping-handout-st-thomas/

For Sonny Rollins’ Solo Transcription of St. Thomas, …