In other words , for a tune in the key of D , use a C harmonica ,etc .
In other words , for a tune in the key of D , use a C harmonica ,etc .
换句话说,就是对于一支D调曲子要用一支C调口琴，以此类推。
In other words , for a tune in the key of D , use a C harmonica ,etc .
换句话说,就是对于一支D调曲子要用一支C调口琴，以此类推。