The pack you mention (and also 'Euro Organ Artist') have some great organs and also nice addon styles.
(I got some packs for my T4, and could download free packupdates for Genos.)
The style he use for 'Laras Theme' seems to be from the Euro & US pack, Euro Shuffle.
He states clearly there is no midi and backingtracks, just the T4 and the possibilites it has.
But I also think he edit and tweak a bit to make it sound 'his way'.