# Chór "Astrolabium"
**Wikidata**: [Q11690478](https://www.wikidata.org/wiki/Q11690478)  
**Source**: https://4ort.xyz/entity/chor-astrolabium

## Summary
Chór "Astrolabium" is a musical entity explicitly classified as a **choir**, defined as an ensemble of singers. It is formally indexed in international library catalogs with a specific Library of Congress Authority ID and a Virtual International Authority File (VIAF) ID. The entity currently has a digital presence linked to the Polish Wikipedia.

## Key Facts
- **Classification:** Instance of a **choir** (an ensemble of singers).
- **VIAF ID:** 167281721.
- **Library of Congress Authority ID:** no2017117133.
- **Wikipedia Presence:** Available in the Polish language (`pl`).
- **Sitelink Count:** 1.
- **Subject Domain:** Choral music (genre).

## FAQs
### Q: What type of musical group is Chór "Astrolabium"?
A: It is an instance of a choir, which is defined as an ensemble of singers who perform choral music together. This classification places it within the broader category of vocal ensembles and organizations.

### Q: Is there an official authority record for Chór "Astrolabium"?
A: Yes, the entity is cataloged in the Library of Congress authority file under the ID `no2017117133` and possesses a Virtual International Authority File (VIAF) ID of `167281721`.

### Q: In which languages is information about Chór "Astrolabium" available?
A: According to the structured data, the entity has a sitelink specifically to the Polish Wikipedia (`pl`).

## Why It Matters
Chór "Astrolabium" matters as a distinct entry within the global taxonomy of choral music. As a choir, it represents a form of musical expression that acts as a cornerstone of cultural and spiritual life. Choirs are essential for preserving musical traditions, fostering social cohesion, and serving educational roles within communities. The inclusion of "Astrolabium" in major authority control systems (VIAF, Library of Congress) validates its existence as a recognizable entity within the musical landscape, ensuring accurate identification across library and information networks.

## Notable For
- Being a distinct entity indexed in the Library of Congress and VIAF databases.
- Classification within the "choir" category, a musical group type with origins tracing back to Ancient Greece.
- Representation in the Polish Wikipedia, indicating specific cultural or linguistic relevance to Polish speakers.

## Body
### Classification and Definition
Chór "Astrolabium" is structured as a **choir**. In the context of musicology, a choir is defined as an ensemble of singers. The entity falls under the specific Dewey Decimal Classification **782.5**. It is classified as a type of **musical group** (instance_of) and is a subclass of both **vocal ensemble** and **organization**.

The term "choir" is synonymous with aliases such as **chorale**, **chorus**, and **orfeón**. While the specific activities of Astrolabium are detailed in its Polish entry, the general field of work for choirs is **choral music**. This musical form originated in **Ancient Greece** and has since evolved into a global phenomenon found in various cultural and religious contexts.

### Authority Control and Identification
The entity is formally recognized through bibliographic identifiers:
- **VIAF ID:** 167281721
- **Library of Congress Authority ID:** no2017117133 (references date to March 6, 2019).

These identifiers distinguish Chór "Astrolabium" from other entities and ensure consistent referencing across information systems.

### Digital Presence
The entity has a **sitelink count of 1**, linking it exclusively to the **Polish Wikipedia** (`wikipedia_languages: pl`). This suggests the entity is primarily documented or notable within Polish-speaking contexts or regions. The topic is categorized under "Category:Choirs" on Wikipedia.

### Context of the Choir Class
As a choir, Chór "Astrolabium" is theoretically part of a tradition that includes diverse organizational structures (choir directors, section leaders) and performance contexts (religious services, concerts). The repertoire for such entities typically spans sacred music, secular compositions, and folk songs.

## References

1. Virtual International Authority File