Underground hip-hop release

• Homemade cassette with assorted songs
• Homemade compilation of songs, perhaps on a cassette
• This-and-that recording for a friend or a party
• Underground rapper's demo
• Song compilation
• Often sentimental recording
• Homemade song assortment
• Homemade collection of songs

Wiktionary Word definitions in Wiktionary
n. A compilation of songs on a tape, usually encompassing many different artists and made without permission.