The music on
Not Available is fairly different from any other music the Residents recorded in the time period it was supposedly conceived in, both in compositional skill and audio quality. Fans have theorized that the music could have been recorded at a later period. The album is split into four parts and an epilogue, with the Residents' characteristic use of drum machines, classical percussion, cartoonish vocals, grand piano and horns, as well as notably the use of
string synthesizers. The lyrics and plot of
Not Available are told in a densely surrealistic manner, notably making use of a
Greek chorus and a particular piano composition that is presented as a theme for one of the album's characters – the full recording was released in 2010 as "Available Piece." A 2011 reissue of the album extended its duration by approximately seven minutes, allegedly its original length. A mix of the album's multitrack tapes (originally titled
X is for Xtra) was released in 2019 on a deluxe edition of the album. ==Critical reception==