The project Shut Up 'n Play Yer Guitar consisting of Shut Up 'n Play Yer Guitar, Shut Up 'n Play Yer Guitar Some More and Return of the Son of Shut Up 'n Play Yer Guitar is a series of albums by Frank Zappa. The albums consist solely of electric guitar instrumentals and improvised solos (mostly) played live by Zappa and featuring a wide variety of backing musicians.

Läther is the sixty-fifth official album by Frank Zappa. It was released posthumously as a three-CD set on Rykodisc in 1996. The album's title is derived from bits of comic dialog that link the songs. Zappa also explained that the name is a joke, based on "common bastardized pronunciation of Germanic syllables by the Swiss."