Fair use is a legal doctrine that allows limited use of copyrighted material without permission from the copyright holder for purposes such as criticism, comment, news reporting, teaching, scholarship, or research.

The popularity of the copyrighted work is not a factor considered in determining whether a use of copyrighted material is fair use.

There is no set maximum length of a copyrighted sound recording that can be used in a new work without permission from the copyright holder under the fair use doctrine. The amount and substantiality of the portion used is one of the factors considered in determining whether a use is fair use.

Interpolation is not a type of music sampling. It is a technique in which a melody or chord progression from one song is used in a new song, but the new song has different lyrics and instrumentation.

A derivative work is a new work that is created by combining elements from two or more existing works. Derivative works include translations, adaptations, dramatizations, and musical arrangements.

Implied license is not a defense to a copyright infringement claim based on music sampling. An implied license is a legal doctrine that allows a person to use copyrighted material without permission from the copyright holder in certain limited circumstances, such as when the use is customary or when the copyright holder has led the person to believe that the use is authorized.

Public domain is a legal term for a work that is not protected by copyright. Works in the public domain can be freely used by anyone without permission from the copyright holder.

The subject matter of the work is not a factor considered in determining whether a work is in the public domain.

A work for hire is a work that is created by an employee as part of their job duties. Works for hire are automatically owned by the employer, not the employee.

Grand rights license is not a type of copyright license. A grand rights license is a type of music publishing agreement that gives the publisher the right to exploit all of the copyright owner's rights in a musical work, including the right to make copies, distribute copies, perform the work publicly, and create derivative works.

A copyright holder is a person who owns the copyright in a work. The copyright holder has the exclusive right to make copies, distribute copies, perform the work publicly, and create derivative works.

Unauthorized derivative works is not a type of copyright infringement. A derivative work is a new work that is created by combining elements from two or more existing works. Derivative works are only infringing if they are created without permission from the copyright holder of the original work.

A copyright infringer is a person who uses copyrighted material without permission from the copyright holder. Copyright infringement is a violation of the copyright holder's exclusive rights.

Imprisonment is not a remedy for copyright infringement. The remedies for copyright infringement are injunctions, damages, and statutory damages.

The maximum penalty for copyright infringement is 5 years in prison.