An brilliant example of prepared 9th chord

At 4:17 of Wicked Game - Chris Issac Live
https://m.youtube.com/watch?v=mOjTweUPt3Q#fauxfullscreen


Key is B Dorian. So all C, F, Gl are sharp


Bass goes

B  BB
A AA
E EE
E EE


So that 4:13 Chris Issac sings F sharp sustained with B bass. Then this same sustained note with A bass and then with E bass. The intervals created are:


At 4:13    B with  F ie 5th (remember all F are F sharp)
At 4:15    A with  F ie 6th (the 3rd from bass added ie C sharp)
At 4:17    E  with  F ie 9th (and of source some instrument plays the 3rd ie G sharp)


Further reading:


Bach bass rules:
https://normanschmidt.net/scores/bachjs-general_bass_rules.pdf