Remember this advice isn't official. There is no guarantee it will reflect your experience because university applications can change between years. Check the official Cambridge and Oxford websites for more accurate information on this year's application format and the required tests.
Also, someone else's experience may not reflect your own. Most interviews are more like conversations than tests and like, any conversation, they are quite interactive.
Number of interviews: 2
Skype interview: No
Time between each interview: 3 hours
Length of interviews: 30 minutes each
I was given material before the interview (an essay on European music and various scores of music) and then asked to analyse and discuss both in interviews.
I didn’t have resources. My school music teacher gave me a