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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesRecording Studios & Audio ProductionChurBlue Wonder AG
Blue Wonder AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Blue Wonder AG is a music house offering a wide range of music-related activities. The core activities include: sale of musical instruments and equipment, music school for young and old, recording studio for recordings and productions, rental of musical instruments and equipment for events, sale of sheet music and music literature, and organization of workshops and events in the field of music. The company operates several branches in Switzerland, including in Chur, St. Gallen and Buchs.

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Products & services

Industry:Recording Studios & Audio Production
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Blue Wonder AG

✓ Offered7
Music school
Music lessons for guitar, bass, piano, keyboard, drums, percussion and vocals at the locations Chur, Buchs and St. Gallen.
Instrument rental
Short- and long-term rental of instruments, including rental purchase, instruments for students as well as models such as classical guitar, electric guitar, electric bass, keyboard, digital piano and drums.
Sound system rental
Rental of PA systems for events, concerts, theater, parties, weddings and seminars, including backline and FOH items as well as active speakers and digital pianos.
Service and repairs
Service and repairs for instruments and amplifiers, cost estimates, repair handling, replacement equipment, as well as guitar and bass service including setup and fretwork.
Recording studio
Recording studio with analogue and digital technology, hard-disk recording, parallel recording of audio and MIDI tracks and access to instruments from the music shop.
Sheet music & CDs
Sheet music, specialist books and CDs section with sheet music for classical, jazz and rock, teaching materials, theory books and music dispatch by post.
Events
Events and concerts with musical performances and registration information; on the site, event pages and previous events are displayed.
Trust & reputation

ranQ Trust Score of Blue Wonder AG: 4.7 out of 5.0

Trust Score4.7/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Blue Wonder AG scores 94.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.90.124%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.100.010%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.100.08%
Blue Wonder AG scores 89.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.70.07%
Blue Wonder AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Blue Wonder AG scores 74.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.74.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Blue Wonder AG reaches a ranQ Trust Score of 4.7 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.9 out of 5 stars from 51 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.9
of 5

Aggregated from 51 reviews across all connected sources

Sources
GGoogle4.951
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Location

Lürlibadstrasse 26
7000 Chur
Opening hours
Mon
13:30 - 18:30
Tue
09:00 - 12:00, 13:30 - 18:30
Wed
09:00 - 12:00, 13:30 - 18:30
Thu
09:00 - 12:00, 13:30 - 18:30
Fri
09:00 - 12:00, 13:30 - 18:30
Sat
09:00 - 12:00, 13:30 - 16:00
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-113.359.899
Founded
2007 · 19 years
Last commercial register change
February 15, 2023
Employees
11 to 20
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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