The song reached #1 on the French charts.
The Pop-Tops English version also reached #1 in Austria, Denmark, Finland, Sweden and Switzerland, and was a hit in Greece with sales of 50,000 units.
In Germany the Pop-Tops spent ten weeks at #1.
German guitarist Ricky King recorded an instrumental version.
"Mamy Blue" afforded the Pop-Tops a hit in both Israel and Japan with chart peaks of respectively #1 and #2.