This is the D Scale for Voice. If you really want to get better in singing and sing more in time and in tune, you need to sing this scale at least 10 times everyday, for about 6 months. I know is a lot, but you need a lot to make your voice better. If you don't know the name of the notes in the scale learn them. You have to sing using the real name of the notes. Notice how on top of the piano you can see the notes, with Flat symbols, but in the lyrics I use only Syllables, like if they were words of a song. Memorize the scale.