| 1938 | June | Ishibashi begin operation as a small shop handling musical instruments in Suruga-dai, Kanda, Chiyoda-ku. |
| 1950 | | Ishibashi changes its name as “Ishibashi Music” |
| 1953 | January | With a capital fund of 300 thousand yen, “Ishibashi Music S/A” is established. |
| 1973 | March | With a capital 10 million yen, “Ishibashi Music S/A” reorganize as “Ishibashi Music Corporation.” |
| April | “Rock Side” opens in Ochanomizu. Tokyo, which is specialized in digital musical instruments. |
| 1976 | April | “Shibuya” branch opens in Shibuya Koen St. |
| 1979 | February | “Keyboard Mart” branch opens in Ochanomizu |
| 1981 | February | “Shinjuku” branch opens near Isetan Department Building in Shinjuku St. |
| 1983 | June | Add capital stock to 40 million yen. |
| 1986 | April | “Ikebukuro” branch opens in Ikebukuro Sunshine Street. |
| 1988 | January | “Yokohama” branch opens in Kanagawa prefecture. |
| June | Add capital stock to 1 hundred million yen. |
| 1989 | November | “Shinsaibashi” branch opens in Osaka prefecture. |
| 1991 | October | “Shinsaibashi” branch re-opens in Shinsaibashi Parco department building. |
| 1994 | March | “Ikebukuro” branch re-opens in Ikebukuro P’Parco department building. |
| 1995 | July | “Shibuya” branch re-opens in Capri Building. |
| 1996 | September | Ishibashi Web Shop opens. |
| 1997 | December | “Kawagoe” branch opens in Saitama prefecture. |
| 1998 | October | “Tsudanuma” branch opens in Chiba prefecture. |
| 1999 | March | “Machida” branch opens in Machida City, Tokyo. |
| 2000 | April | Add capital fund to 125 million yen. |
| October | “Kobe Sannomiya” branch opens in Hyogo prefecture. |
| November | “Nagoya Sakae” branch opens in Aichi prefecture. |
| 2001 | November | “Ochanomizu Book Side” branch reopens and “*1 Kaitori Center” opens in Ochanomizu. *1 Kaitori Center: A place where we buy used (second hand) instruments from our customers. |
| 2003 | June | “Yokohama” branch reopens with floor space expanded. |
| 2004 | November | “Shibuya” branch reopens in Shibuya BEAM building with floor space expanded. |
| 2005 | April | “Nagoya Sakae” branch reopens in Skyle department store building. “Lesson” (A Music School for
Grown-ups) begin a series of musical instrument lessons. |
| October | “Umeda” branch opens in Nu Chayamachi department building of Osaka. |
| 2007 | March | “Kawagoe” branch opens inside Kawagoe Modi department store building with floor space expanded. “Lesson” begins series of musical instrument lessons for grown-ups at the same time. |
| September | “Tachikawa” branch opens in Tokyo. |
| October | “Machida” branch reopens inside Machida Jorna department store building. |
| 2008 | May | "Ikebukuro" branch reopens on the 7th floor of P'PARCO department building. |
| 2009 | August | All stores in the Ochanomizu area reopens. |
| October | "Shibuya WEST" (Drums/Used Wind and Brass musical instrument shop) opens on the 2nd floor of ASSORTI building. |
| 2010 | March | "Fukuoka-parco" branch opens in Fukuoka. |
| 2011 | April | Shinsaibashi branch reopens in America-mura. |
| October | Umeda branch reopens. |