Read the Tamil Advent hymn book by number
The Advent hymn book, அட்வென்ட் பாட்டு புத்தகம், is numbered. If the board or the service sheet says hymn 5, you do not need the title first.
Open Advent and choose the number, or search the title in Tamil. The page shows the pallavi and each verse as they are sung, including the line that points back to the pallavi.
Hymns that already have lyrics can be opened on the worship screen. One slide is the pallavi, and each following slide is one verse, sized so the whole stanza stays on the screen.
Use the hymn number from your book. The same number on this site is the Advent hymn of that number.