Angular2: Service - simple get id

artist.service.ts

urlArtista:string = "https://api.spotify.com/v1/artists";

getArtista( id:string ){

    let query = `/${ id }`;
    let url = this.urlArtista + query;
    
    return this.http.get( url )
            .map( res =>{
                console.log( res.json()  );
                return res.json();
            })

  }