Yes
select t2.name from actor as t1 join musical as t2 on t1.musical_id = t2.musical_id group by t1.musical_id order by count ( * ) desc limit 1
From which year is it?
select t2.year from actor as t1 join musical as t2 on t1.musical_id = t2.musical_id group by t1.musical_id order by count ( * ) desc limit 1
What is the musical id of  Lou Carpenter?
select t2.musical_id from actor as t1 join musical as t2 on t1.musical_id = t2.musical_id where t1.character = "Lou Carpenter"