I was practising Tequila this afternoon when my other half, a very competent ear-musician, picked me up on some of the notes I was playing in error. I assured her that I was only playing what was written (in the sheet music on your site). On checking I was correct – except that when we played the audio track, we agreed that she was right (again)!
It's the lick in bars 18-23. For the tenor, it's written D-G-A-Bb-G. I reality it's D-E-G-Bb-G.