Tambo .......... sounds like it's in Gmaj.
Classic 1-6-2-5 chord sequence.
In G that would be.........
G - Em7 - Am7 - D7
The tune I think just moves around those chords. The bridge does the usual and goes to the 4 chord (C ......... properly Cmaj7) ....... then Cm, then Am7, and to D7 for the turnaround.