During the golden age of hip hop, samples were heavily used. The ability to sample different beats, riffs and patterns from a wide variety of sources gave birth to a new breed of producers and DJs who did not necessarily need formal musical training or instruments, just a good ear for sound collages. These samples were derived from a number of genres, ranging from jazz, funk and soul to rock and roll. For example, "Paul's Boutique", the Beastie Boys' second studio album, drew from over 200 individual samples, 24 of which were featured on the last track of the album. Samples and sound bites were not limited to just music. RZA of the Wu-Tang Clan, a hip hop collective formed in the 1990s, sampled sound clips from his own collection of 1970s kung-fu films to bolster and frame the group's gritty lyrical content. Many of the sample-laden albums released during this time would not be able to receive legal clearance today.