Music App homework

I used a drop down list (collection) from the label model when creating an artist to enable the user to select the appropriate label for the artist but had some issues getting the label_id to be stored in the artist record. My solution was to extract the label_id from params[:label] and update the artist record immediately after it had been created. I'm sure there is a one-step solution to set all of the artist parameters and have the record created with the relevant variables set and would like to understand how to do this.

Simon