This piyut is a classic that can be sung to various parts of the Tefila, such as El Adon, Rau Banim and Shavat Aniyim. I recorded the entire song and then added Shavat Aniyim.
The official maqam is bayat but it is also associated with irak.
Arguably the nicest tune for Kedusha out there. Made famous by R' Haim Louk. Enjoy!