Keep A Word, Replace A Word (Part 2)

Trivial Pursuits
41

onion fries

42

onion breath

43

tuna breath

44

tuna piano

45

Piano Keys

46

Francis Keys

47

mystery keys

48

mystery anthem

49

mystery machine

50

machine head

51

talking head

52

head waiter

53

head injury

54

injury duty

55

Duty Calls

56

collect calls

57

troll calls

58

toll troll

59

toll lane

60

Firefly Lane