You are Miles "tails" Prower. You were on a walk in green hill. But the title card was different, it simply said "HILL"

As you got further the hills were gray & there was a lot of murdered animals. As you search for sonic you spotted him on a cliff with his eyes closed. As you got closer the music changed to static, then abruptly to marble zones music

When sonic heard the sudden change of music he looked at you, his eyes black with X pupils

MILES! DID YOU TOUCH MY IPOD SHUFFLE AGAIN?