The budget Vanguard Visionaries collection is a very compact (and, at ten tracks, it borders on microscopic) introduction to the weird sonic playground of electronic music pioneers Jean-Jacques Perrey and Gershon Kingsley. The duo’s most ubiquitous output is here (“Swan’s Splashdown,” “One Note Samba — Spanish Flea,” and “The Unidentified Flying Object”), but folks already hooked by the charm and creativity of those tracks should look to the much more thorough The Essential Perrey & Kingsley (also on Vanguard) to get their bleep-and-bloop fix. – J. Scott McClintock