Shankar in their first medley sang sase aage hoge hindustani and next episode himesh followed wit desh bhakti songs and shreya and shaan followed soon.
Shankar against himesh bought ganpati idol on shage and paid tribute to the god. Shaan follwed it by bringing Lord Shiva's idol.
Shankar started using sargams in the songs and aishwarya and anwasha and not sure but think also followed by shreya.
Shankars singing and Shankar rockstars medley are different with invovative themes and with a lot of improvisation not to mention fantastic singing. Even while paying tribute to Himesh by singing himeshs songs they improvised it and has their own touch. All others mostly have sung the song as it is without varying it too much. It wouldnt be wrong to say their medleys are the best.
This is in response as to some of you dint think Shankars rockstars deserve to be in the final.