The "w0o0!" at the end of the last one- I had some trouble with the first one, but I can sing much higher pitches than that

I tried to sing One Day by Lovejoy in my highest pitch and a lower pitch (because I can't really do it without piano accompaniment.) All I'll say is: I can barely talk anymore-; https://voca.ro/1gdUJv7F0GMb - High pitch; https://voca.ro/1gQsXnCChWJN - Lower pitch