Using Custom Class Quiz

songWithSinger: is actually a factory method. It gets called on the class as a whole. Constructors are called on newly allocated instances of the class. I'm guessing the constructor would look something like this:

Song *someSong = [[Song alloc] initWithSinger:@"James Brown"];

My original post was correct. A convenience constructor takes care of allocating memory and returning an instance all in one method call. J Andrew Scott's post is called a designed initializer. You still have to call alloc to allocate memory but you can initialize and assign values to an object with the same method call.

As for the quiz, there seems to be a bug with the Treehouse quick-checker. Just remove the space between the colon after songWithSinger and the @ symbol and it should work. like this:

Song *someSong = [Song songWithSinger:@"James Brown"];