Final answer:
The subject of this question is music and it asks about various terms and concepts related to music composition and notation. The answer explains the terms Double Bar, Dal Segno, and Da Capo al Fine.
Step-by-step explanation:
The subject of this question is Music. The question is asking about various terms and concepts related to music composition and notation.
1. Nena sings the Paruparong Bukid excellently. The musical composition of this song has two sections. The term for indicating a repeat in music is Double Bar.
4. When Princess plays the piano and needs to go back to previous sections in her music sheet, she uses the Dal Segno sign. This indicates to go back to the sign and play from there.
7. Vincent sings the whole song once and then repeats from the beginning to the end. The term for this is Da Capo al Fine.