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JDirectItems Auction Hobbies & Crafts Musical Instruments Japanese Instruments Shakuhachi Main Units
◆横山勝也師自身が調整した超レアな「虚竹」を再現しました! 1尺6寸(E) ◆REIZAN TUNED Shakuhachi
        

  • Quantity
    : 1
  • Starting Bid
    :13,500円
  • Highest Bidder
    : たけふき / Rating:138
  • Start Time
    :Jul 26, 2026 10:27
  • End Time
    :Aug 02, 2026 21:07
  • Auction ID
    :q1238485869
  • Item Condition
    :State it in the description
  • Auto Extension
    :Yes
  • Authentication
    :No
  • Early Close
    :Yes
  • Return Accepted
    :no
  • Description
  • Q&A ()
  • Estimated Cost
  • Report an Issue
Notes
  1. Please pay attention to the local shipping fee in Japan and confirm before placing a bid.
  2. The item location is far from the overseas delivery address (Kanagawa), please pay attention to the Japanese shipping fee
画像で2本並んでいるうち左側の方が今回の作品です。(右側は参考にした「虚竹」です。)

虚竹について
かつ横山勝也・山本邦山が監修した「虚竹」という木管尺八がありました。価格が高かったので商業的には成功とは言えませんでしたがその性能の良さはよく知られ、今もオークションで時々出品されることがあります。歌口形状や中継ぎの材質で琴古・都山の2種がありそれぞれ8寸管と6寸管がありました。とりわけ6寸管の性能がとても良いと当時評判になっていたことはあまり知られていません。横山勝也師が「こんな楽器が出回ったら製管師が商売上がったりになってしまうよ」と危惧されていたそうです。

虚竹6寸を勝也師本人が改造した超レアな逸品
国際尺八研修館で習っていた尺八仲間がいるのですが、その評判の良い虚竹6寸を購入して見せたところ勝也師が「本当はこんな風にしたかっただよね」とい言いながら目の前で直し始めたそうです。量産する場合にはいろいろ制約があり思い通りにできなかった部分を次のように改修しました。
①天口面の前方を削り傾斜を緩くする。(「龍畝」のように水平に近づける)
②浅くなったエッジを適正な深さに戻すために舌面から薄く削り出す。(内側から削ってはいけない)
③第3孔以外の指孔を大きくする(量産品は指孔が小さめのため)
このような改修を施すことによって音量や音色のみならず操作性も格段によくなりました。後日、横山師がその尺八を使って実際のステージ電装でも「春の海」を吹いたことがあり、竹の「勝也管」に比べてもまったく遜色のない「虚竹(勝也改)」の音に友人は感動したそうです。

他の木管でも「虚竹(勝也改)」に近づけることができるか
木管の6寸は8寸に比べて当たり外れが少なくよく鳴るものが多いです。厳密に言えば各社によって内径の設計が異なるので歌口を真似たところで完全に「虚竹」と同じものにはなりません。しかし実験してみる価値はあると考えワダ楽器の「琴風調」で試してみました。
まず歌口は上記の①②の他にアゴあたりを根本的に変える必要があります。また真上から見た内径も「虚竹」に習って拡大させながら円形から馬蹄形に直しました。指孔は虚竹は完全な現代調律なので、「琴風調」の第3孔は下に移動させる必要がありました。他の指孔も調律しながら拡大しました。
結果として95%ぐらいまでは「虚竹(勝也改)」に近づくことができたと思います。(この尺八に関してはYoutubeのこんちゃん尺八で動画をご覧ください。)
もし他メーカーの木管6寸をお持ちの方で勝也タイプの改造をご希望される方は「あっと驚く悠改造」のオークションにご応募ください。

【諸元】長さ480mm 重さ307g 頭部直径37mm   底部直径50mm 歌口内径縦19mm 横20mm エッジ深さ4mm 最大指孔11mm

(留意事項)
PC動作環境などで色味が異なることがあります。何か疑問点があればご質問ください。なお取引はNC/NRでお願いします。落札された方は必ず落札後48時間以内に手続きを開始するようお願いします。評価が極端によくない方や「受取り通知をしてくれない」という悪評価が多数ある人は入札を取り消して、次点の方を繰り上げる場合があります。
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Product Price JPY
Japanese Sales Tax(10%) JPY

A 10% Sales Tax is applied to goods and services in Japan. The price may include the tax or it may be added separately. Please check the price details when ordering.

Note: This is a domestic sales tax applied within Japan.

Japan Local Shipping Fee JPY Japan Local Shipping Fee Reference
Product Weight KG The maximum weight limit is 30 kg
International Shipping Methods
Proxy bidding and purchasing services are becoming increasingly convenient. However, overseas shopping carries certain risks and issues. To reduce these risks and enhance shopping safety, please be sure to read the following information:

1. International Shipping

   Air Freight: If the item status is not confirmed within two days after the arrival notice, any customer complaints cannot be addressed with the seller.

2. After Receiving the Product

Please confirm and inspect the product as soon as possible to ensure that the product specifications, quantity, accessories, and description are correct

If, unfortunately, there are any issues, you can refer to the following examples on how to report related product problems:
1. Example of missing product information
2. Example of product not matching provided information
3. Example of damaged product information

Important Notes: 1. If the seller is unwilling to ship overseas or is unaware that the product will be shipped overseas, the international shipping cost for returns or exchanges will need to be borne by the member. You may refer to the EMS e-Express fee inquiry from the post office. If it involves alcoholic beverages or items that affect flight safety, the post office cannot be used for shipment, and only DHL can be used to ship back to Japan.
2. During the product complaint handling period, please retain the complete outer packaging of the product (including the shipping label information), and refrain from attempting any repairs or altering the original condition. Any modifications may result in the inability to process the case.

3. After Inspecting the Product

After receiving and inspecting the item, if you have any questions, it is recommended to contact Letao within 2 hours. Here are some reminders:

1. Please do not unpack, use or repair the received item yourself, and be sure to keep the original packaging to facilitate subsequent handling of related matters, so as to avoid changes to the item that may cause the seller to be unwilling to process.

2. You can call customer service, and the customer service will leave a message for you as below. Please provide the following information:
"Hello, we will first help you establish a complaint case for Product ID: _______ .But we need you to 2-3 clear photos of the product issue, including photos of the product problem, product packaging, shipping details slip, and outer box. Send them to service@letao.my and inform us of your desired resolution (failing to provide this may result in an inability to process subsequent matters). After sending the email, notify us in the customer service message. We will confirm with the seller as soon as possible. and if there are any related questions, we will contact you through the customer service message. Thank you for your cooperation."

Please provide:
1. "Product ID"
2. Photo of the "Delivery Note" (if any)
3. Photos of the outer box (including inner and outer packaging)
4. Photos of the product (Please include relevant descriptions to help us confirm with the seller)

Important Notes:
1. Do not include foreign text or other products in the background of the image.
2. Please keep the complete product packaging (including the shipping label information), and refrain from repairing or altering the original condition on your own, as any changes may result in the case being unable to be processed.
3. Please provide the relevant information within 48 hours to avoid missing the golden hour for reflection and causing situations that cannot be handled.
4. Due to 99% of Japanese sellers being unwilling or unaware of shipping goods overseas, if a seller is willing to handle the issue, the goods must be sent back to Japan, and the international shipping costs incurred must be borne by the member. Letao will use postal EMS international express to send the goods back to Japan.
5. As the goods are purchased from overseas, it may take approximately one to two weeks to complete the relevant processing procedures when issues arise with the goods. Please be reminded that you can inquire about the approximate cost through the EMS service at the post office.

4. FAQ

1. Issue of Authenticity: If antique or branded goods are found to be counterfeit upon receipt, clear photos showing the differences between the genuine product and the imitation must be provided as evidence. If unable to provide relevant proof, assistance can be sought to find a third-party reputable organization for a premium authentication service .
2. Leaking Iron Teapot: If an antique iron teapot is leaking, please take clear photos of the leaking area and provide them.
3. Transport Damage: If the goods are damaged during international shipping (to the pickup point), you need to provide photos of the outer packaging of the parcel and clear photos of the damaged goods' outer packaging.

※ Note: Photos provided to sellers should not contain any foreign-related information.
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    Product name: ◆横山勝也師自身が調整した超レアな「虚竹」を再現しました! 1尺6寸(E) ◆REIZAN TUNED Shakuhachi
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my