1 Piano on the Niger River
2 Piano on the Volga River
3 Piano on the Missouri River
4 Piano on the Yellow River
5 Piano on the Rhine River
6 Piano on the Gange River
7 Piano on the Tevere River
8 Piano on the Thames River
9 Piano on the Yangtze River
10 Piano on the Congo River
11 Piano on the Seine River
12 Piano on the Mississippi River
13 Piano on the Adige River
14 Piano on the Mekong River
15 Piano on the Orinoco River
16 Piano on the Danube River
17 Piano on the Nilo River
18 Piano on the Po River
19 Piano on the Zambezi River
20 Piano on the Amazon River