Normally the first note of a song is played on the first beat of the first bar. In some cases, the melody could start on a different beat, not the first. In these cases, the first bar is called a Pickup Bar (or Anacrusis).
If you are interested in guitar/bouzouki tablatures for adults, especially in Balkan and Greek music, the Tabs/Notations site might be a good starting point. Primary School Resources
This Seattle duo explore the more darkly psychedelic side of indie rock on this retrospective album, covering songs recorded from 2009-2019. Bandcamp New & Notable Jan 20, 2022
Hooky songs that will appeal to kids and grown-ups alike, smash-cutting the irreverence of The Moldy Peaches with wild psychedelia. Bandcamp New & Notable May 30, 2020
This children’s record isn’t just for kids. Smoky soul grooves and bizarro pop chestnuts make for an entertaining listen. Bandcamp New & Notable Jul 21, 2018