The song is a short, repetitive wish for a long and prosperous life:
The song (Many White Days) is a traditional Latvian "Happy Birthday" or celebratory song that the legendary Latvian-American band Čikāgas Piecīši (Chicago Five) famously recorded. MP3 & Digital Access
The band's catalog was digitized and released for MP3 download through Latvians Online and various streaming platforms. You can find this specific track on the following albums: (1968) – Track B1 Jocīgie gadi (2001) Čikāgas Piecīšu zelts (2008 compilation)
Daudz baltu dieniņu Laimiņa dodi, Diženi, raženi mīlējoti!
Daudz baltu dieniņu Laimiņa dodi, Diženi, raženi dzīvojoti! (Repeat)