It seems my previous upload of this video was completely muted at some point by YouTube for unknown reasons. I decided to reupload it for International Workers' Day this year with various improvements such as updating some of the songs with recordings of better quality and improving the sound on others. Happy International Workers' Day!

0:00 Москва Майская (Moscow in May) [Soviet Union]

5:12 Da Nam Živi, Živi Rad (Long Live, Live Labour) [Yugoslavia]

6:38 Възхвала на Труда (Ode to Labour) [Bulgaria]

8:39 Píseň práce (Song of Labour) [Czechoslovakia]

9:51 Nasza Piosenka (Our Song) [Poland]

11:47 Májusköszöntő (May Greeting) [Hungary]

13:32 Unu Mai Muncitoresc (A Workers' First of May) [Romania]

15:43 Der rote Wedding (Red Wedding) [Germany]

19:17 Första Maj (First of May) [Sweden]

20:45 Sang Om Første Maj (Song of the First of May) [Denmark]

23:48 Inno del Primo Maggio (Hymn of the First of May) [Italy]

27:50 Himno del Primero de Mayo (Hymn of the First of May) [Cuba]

29:24 Día del Trabajo (Day of Labour) [Mexico]

31:47 Primero de Mayo (First of May) [Chile]

34:29 Canto al Trabajo (Chant to Labour) [Argentina]

37:54 聞け万国の労働者 (Listen, Workers of the World) [Japan]

39:45 五一之歌 (Song of the First of May) [China]

42:15 हम मेहनतकश (We Are Working) [India]

46:31 এলোরে দিন এলো আবার রক্তেরাঙ্গা পয়লা মে (Workers' Day Comes on the First of May) [Bangladesh]

50:17 Awit ng Pag-asa (Song of Hope) [Philippines]

52:43 Bir Mayıs Marşı (First of May March) [Turkey]

57:31 We'll Have a May Day [Great Britain]

Art & Music

One Hour Of Russian Revolutionary Music Before Soviet Union

One Hour Of Sino Japanese Friendship Music (一小时的中日友好的歌曲 ⧸ 日中友好の歌の一時間)

One Hour Of Music International Workers' Day

One Hour Of Soviet Belarusian Music

One Hour Of Soviet Dagestani Music

One Hour Of Soviet Karelo Finnish Music

One Hour Of Soviet Kazakh Music

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Baba Wague Diakite

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歌唱祖国 Ode To The Motherland ( Rare Version)

Nightmare - KSAS Hosting Segments #5 1990