  After providing a brief genealogy of our recently proposed model for High-Tc
cuprates, we investigate the details of the microscopic mechanism that produces
an attractive interaction between neighboring holes. We show that a peculiar
arrangement of the $p_x$ and $p_y$ oxygen orbitals makes the mutual magnetic
interaction of the holes with the localized copper ions to produce a net
attractive interaction between themselves, which is responsible for the
emergence of a superconducting phase. We also study the connection existing
between the proposed pseudogap order parameter and the spectral density. We
show that the occurrence of two sharp peaks in the latter, between which the
density of states suffers a depletion is a direct consequence of the d-wave
character of the pseudogap order parameter dependence on $\mathbf{k}$, which
breaks the 90$^\circ$-rotation symmetry of the oxygen lattices. The peak
separation in the spectral density works effectively as an overall pseudogap
order parameter for the cuprates. We explicitly calculate the spectral density
in the strange metal and pseudogap phases of Bi2212, at different temperatures,
and show that our results compare very well with the experimental data.
