"Flower" is the EP by Soundgarden released in 1989, a year after the album from which the eponymous song is taken, that "Ultramega Ok" that received good reviews and was nominated for the "Grammy Awards".
"Head Injury" is another track from the first LP and in both, Hiro Yamamoto’s virtuosic bass stands out, skillfully producing remarkable arpeggios. Cornell, in all his histrionic power, showcases his versatility in a Zeppelin-esque piece like the first and a fast-paced, intense one like the second, demonstrating his excellent skills that would grow from album to album.
The previously unreleased "Toy Box" instead features Kim Thayl's guitar with its memorable riff, resembling a lava flow, a bit of a taste of what they would experiment with in the subsequent "Louder than Love" which would be released by A&M in the same year as this mini album’s release.
In short, an EP made for collectors, difficult to find on CD, more easily on vinyl or MP3 from iTunes.