A patriotic song praising the Semigallian duke Namejs (also known as Nameisis). He ruled in the western part of Semigallia, with his capital at Tērvete. In 1279–81, he led a Semigallian uprising against the Livonian Order. ... https://www.youtube.com/watch?v=Skgl23FeKgM
"Daugav's Abas Malas Mūžam Nesadalās" - "The Two Sides Of Daugava Are Forever Indivisible".
Composer: Jānis Norvilis
Text Author: Jānis Pliekšāns (Rainis)
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https://www.youtube.com/watch?v=y2luFJPxhy0
"Nevis Slinkojot Un Pūstot" - "Not By Lazing And Idling"
Composer: Jurjānu Andrejs
Text Author: Juris Alunāns
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https://www.youtube.com/watch?v=gbC2lVEN-io
"Zemnieku Sacelšanās Dziesma" - "Song of the Peasant Uprising"
Note - I don't have much information about this song nor did I find any lyrics. This recording is from a soviet-era film about the 1802 Kauguri Uprising, where Latvian peasants revolted. This song might have its roots in that event or it might have been composed specifically for the film, I do not know. Also, I felt like it would've been more appropriate to use a picture of the 1905 revolution since there are no images or artworks related to the 1802 uprising.
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https://www.youtube.com/watch?v=PnqAVC2dnV4
"Lai Līgo Lepna Dziesma" - "May A Proud Song Sway", also known as "Dziesma Brīvai Latvijai" - "A Song For Free Latvia" is a Latvian patriotic song that saw frequent usage during Kārlis Ulmanis' rule (1934-1940).
Composer: Jāzeps Vītols
Text Author: Vilis Plūdons
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https://www.youtube.com/watch?v=Glu6oe0yl1Y