The singular possessive form is contralto's.
The possessive form of the singular noun soprano is soprano's.Example: The soprano's voice is perfect for this role.
Yes, singer's is the possessive form for the singular noun singer.Example: The singer's performance received high praise.
Maybe, but it depends on the context.I love these songs (plural, no apostrophe)I love this song's melody (singular, possessive)These songs' lyrics were all written by the same person (plural, possessive)
The genitive singular of all English nouns is formed by adding -'s: piano's
Quantum is singular, not singular possessive. The singular possessive form is quantum's.
The singular possessive of "ant" is "ant's" and the plural possessive is "ants'".
Museum is singular. Museum's is singular possessive. Museums is plural. Museums' is plural possessive.
The singular possessive pronouns are "my," "mine," "your," "yours," "his," "her," and "its."
The singular possessive of dish is dish's
Grave's is the singular possessive.
The singular possessive form of "test" is "test's".
The singular possessive is Martin's.
The singular possessive is fish's.
Buzz's is the singular possessive.
The singular possessive is biker's; the plural possessive is bikers'.
The singular possessive of criteria is criteria's.