I've always thought of In a Gadda Da Vida as one of the earliest "metal-like" songs, but there were many around this time that I think inspired the first metal bands.
Iron butterfly is great. "Summer time blues" by blue cheer is also another great song that was heavy for its time and came before Black Sabbath (and can very well be considered a "proto-metal" song).
I've always thought of In a Gadda Da Vida as one of the earliest "metal-like" songs, but there were many around this time that I think inspired the first metal bands.
Iron butterfly is great. "Summer time blues" by blue cheer is also another great song that was heavy for its time and came before Black Sabbath (and can very well be considered a "proto-metal" song).