SELECT title FROM vocals AS T1 JOIN songs AS T2 ON T1.songid  =  T2.songid GROUP BY T1.songid ORDER BY count(*) DESC LIMIT 1
What is the song with the most vocals?
[Schema (values) (types)]: | music_2 |  Songs : songid (text) , title (number) | Albums : aid (text) , title (number) , year (text) , label (number) , type (text) | Band : id (text) , firstname (number) , lastname (text) | Instruments : songid (text) , bandmateid (number) , instrument (text) | Performance : songid (text) , bandmate (number) , stageposition (text) | Tracklists : albumid (text) , position (number) , songid (text) | Vocals : songid (text) , bandmate (number) , type (text);