In Irish (Gaeilge), the traditional way to sing "Happy Birthday" is "Breithlá sona duit" (pronounced: Breh-law sun-ah ditch). Here's the phrase written in Irish script:
"Breithlá sona duit"
Please note that Irish has different dialects, and the pronunciation might vary slightly based on the region or the speaker. But the above version is commonly used and understood throughout the country. If you're singing to one person, you can say "duit" (to you), and if you're singing to multiple people, you can say "daoibh" (to you all):
"Breithlá sona daoibh" (pronounced: Breh-law sun-ah dee-iv).
Irish is a beautiful and culturally rich language, so incorporating it into celebrations like birthdays can add a special touch.