Hi, I'm a guy who's still new in singing. I'm a fan of Vocaloid that I sing it at home when I'm alone. However, when I discovered Utaite, I sang as best as I could. I notice that if I sing high pitches like amatsuki's idea, kimi dakewa, and more, I feel like there is something blocking my throat, or sometimes my voice gets wobbly. I tried raising the sound of my voice that i get a bit satisfied however, I can't do it much if my parents are at home. Please teach me some voice tips or some advice. Thanks!