[web2py] Access other table

[Christian]

Hello everyone,
given the case, I have these 2 tables:

db.define_table('artist',
                Field('name'))

db.define_table('album',
                Field('artist_id', db.artist),
                Field('name'))

How would I add a field in the album table, (e.g. artist_name), that
references the corrosponding db.artist.name of the artist table. I
would like to access the album table via the restful api and I don't
want to make 2 calls to get the album first and then the artist name
via artist_id.

Thanks and regards,
Christian