Misc: What name is given to the staff or crook of a bishop?

Questions

whose most commercially successful album was 'court and spark' in 1974?

who sang 'have you ever seen the rain'?

which crosby, stills, and nash's debut album included a song about a girl and the colour of her eyes?

who wrote dionne warwick's 'walk on by' and 'say a little prayer'?

what is a group of geese flying?