"play a D chord and sing the notes C, E, G, A and B flat over it in that order ..."

I meant play a C major chord and sing the notes C, E, G, A and Bflat over it.

For the record, Jacks Website is superbly and meticulously set up and I would highly recommend that anyone give it their full attention.

He has done us all a service by creating it and it would be a fool who ignored it.