standard body of choices and techniques present at a given time and a given place is referred to as performance practice, whereas interpretation is generally used to mean the individual choices of a performer. Copyright and legal status Copyright is a government-granted monopoly which, for a limited time, gives a composition's owner—such as a composer or a composer's employer, in the case of work for hire—a set of exclusive rights to the composition, such as the exclusive right to publish sheet music describing the composition and how it should be performed. Copyright requires anyone else wanting to use the composition in the same ways to obtain a license (permission) from the owner. In some jurisdictions, the composer can assign copyright, in part, to another party. Often, composers who aren't doing business as publishing companies themselves will temporarily assign their copyright interests to formal publishing companies, granting those companies a license to control both the publication and the further licensing of the composer's work. Contract law, not copyright law, governs these composer–publisher contracts, which ordinarily involve an agreement on how profits from the publisher's activities related to the work will be shared with the composer in the form of royalties. The scope of copyright in general is defined by various international treaties and their implementations, which take the form of national statutes, and in common law jurisdictions, case law. These agreements and corresponding body of law distinguish between the rights applicable to sound recordings and the rights applicable to compositions. For example, Beethoven's 9th Symphony is in the public domain, but in most of the world, recordings of particular performances of that composition usually are not. For copyright purposes, song lyrics and other performed words are considered part of the composition, even though they may have different authors and copyright owners than the non-lyrical elements. Many jurisdictions allow for compulsory licensing of certain uses of compositions. For example, copyright law may allow a record company to pay a modest fee to a copyright collective to which the composer or publisher belongs, in exchange for the right to make and distribute CDs containing a cover band's performance of the composer or publisher's compositions. The license is "compulsory" because the copyright owner cannot refuse or set terms for the license. Copyright collectives also typically manage the licensing of public performances of compositions, whether by live musicians or by transmitting sound recordings over radio