1. hymn / psalm / carol / mass / ballad
The word “ballad” doesn’t belong there because the other words concerns church.
2. duet / triplet / quartet / quintet / sextet
The word “duet” doesn’t belong there because this is the only word which concers singing.
3. piano / violin / guitar / mandolin / viola
The word “piano” doesn’t belong there because the other instruments are all stringed instruments
4. cartoon / western / caddy / thriller / slapstick
The word “caddy” doesn’t belong there because the other words concerns entertainment.
5. ringmaster / tightrope / sawdust / musical / arena
The word “musical” doesn’t belong there because because the other words belong to circus.
6. understudy / bouncer / prompter / stagehand / director
The word “bouncer” doesn’t belong there because the others concerns theatre.
7. opera / farce / tragedy / comedy / melodrama
The word “opera” doesn’t belong there because because the others are spoken.
8. exhibit / catalogue / projector / collection / admission
The word “projector” doesn’t belong there because the other words concerns to a museum.
9. requiem / cantata / oratorio / aria / concerto
The word “requiem” doesn’t belong there because it is just spoken with no music.
10. flop / hit / review / bestseller / fiasco
The word “review” doesn’t belong there because the others concerns success.
11. tapestry / landscape / fresco / portrait / drawing
The word “landscape” doesn’t belong there because the others concerns art.
12. foreword / index / appendix / statue / dust-jacket
The word “statue” doesn’t belong there because the others concerns written things.
13. screenplay / witness / soundtrack / credits / clapperboard
The word “witness” doesn’t belong there because the others concerns film-making.
14. cinema / casino / museum / gallery / bingo
The word “bingo” doesn’t belong there because it is a game and the others are buildings.
15. snap / close-up / blow-up / score / print
The word “score” doesn’t belong there because the other words belong to photography.