Hiro Yamamoto

Hiro Yamamoto is one of those founding members who quietly made something massive possible and then stepped away before the fame avalanche hit — which, honestly, takes a certain kind of self-awareness most musicians never develop. He was a core part of the original Soundgarden lineup out of Seattle, co-writing and playing bass on their early records when the band was still figuring out what that dark, slow-grinding heavy sound could be, before grunge became a word everyone overused. He went to Western Washington University, which puts him in that fertile Pacific Northwest scene at exactly the right moment in the early '80s. After leaving he finished a master's in physical chemistry and went on to run the organic chemistry lab at an analytical firm, which feels completely in character — this is a guy who seemed to care about the music, played his part in one of the most important bands of that era, and then quietly moved on. Respectable, understated, and probably fine with being the guy only the real fans know by name.

This take was written by generative AI, one per person, from publicly reported facts (editorial policy). It is a reading of the record, not reporting.

Hiro Yamamoto (born April 13, 1961) is an American bassist from Seattle who co-founded Soundgarden with Kim Thayil and Chris Cornell in 1984. He played on the band's early EPs and the albums Ultramega OK and Louder Than Love before leaving in 1989, later formed the band Truly, and was inducted into the Rock and Roll Hall of Fame as a founding member of Soundgarden in 2025.

Name (English)

Hiro Yamamoto

Name (Japanese)

ヒロ・ヤマモト

Reading

ひろ・やまもと

Born

April 13, 1961 (age 65)

Origin

Seattle, Washington, United States

Occupation

Musician

Zodiac / Chinese zodiac

Aries / Ox

University

Western Washington University

Works summary

Works

10 (1991–2000)

By year (titles with a known year)

1991: 1, 1995: 1, 1997: 2, 2000: 1, year unknown: 5

Debut work

Heart and Lungs

Filmography / notable works

• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E3%83%92%E3%83%AD%E3%83%BB%E3%83%A4%E3%83%9E%E3%83%A2%E3%83%88
• Wikidatahttps://www.wikidata.org/wiki/Q461564

Tags

• Musician

Last updated

October 18, 2026

Only publicly available facts are listed; non-public or unconfirmed items are omitted. Base data was compiled from Wikidata from June 2026 onward; ages are recalculated daily and deaths are checked against Wikidata on an ongoing basis. Works and profile fields sourced from Wikipedia reflect content as of 2026-08-26. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.