In popular music, interpolation (also called a replayed sample) refers to using a melody—or portions of a melody (often with modified lyrics)—from a previously recorded song but re-recording the melody instead of sampling it. Interpolation is often used when the artist or label who owns the piece of music declines to license the sample, or if licensing the piece of music is considered too costly.
Main article: List of interpolated songs
Interpolation is prevalent in many genres of popular music; early examples are the Beatles interpolating "La Marseillaise", among four other interpolations in the 1967 song "All You Need Is Love", and Lyn Collins interpolating lyrics from the 5 Royales' "Think" in her similarly titled 1972 song "Think (About It)".
One genre where interpolating (as well as sampling) is highly prevalent is hip hop music; a prominent example is Stevie Wonder's "Pastime Paradise" interpolated in Coolio's hit song "Gangsta's Paradise".