private void btnDeleteComposer_Click(object sender, RoutedEventArgs e)
        {
            // Deletes the composer
            if (cboComposer.SelectedItem != null)
            {
                // Call the API if the selected item isn't null to delete it
                HttpClient          client   = InitializeClient();
                HttpResponseMessage response = new HttpResponseMessage();

                Composer composer = composers.ElementAt(cboComposer.SelectedIndex);

                response = client.DeleteAsync("Composer/" + composer.Id).Result;
                composers.Remove(composer);

                Rebind();

                // Clear text boxes
                btnNew_Click(sender, e);
            }
        }