jan Langhammer✓ Add us as a preferred source on Google
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Followers
369
Account age
2 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor jan Langhammer
Known for
31 views
#silentsunday
23 views
Frühling!
Spring!
Άνοιξη!
Dieser Zitronenfalter war heute so freundlich und geduldig, sich von mir fotographieren zu lassen. ✨
#photo #photography #nature #natur #schmetterling #butterfly #πεταλούδα #ανοιξη #fruehling #spring #flowers #blüten
5 views
/// "jazzklub #14" ~ featuring Ben Lehmann (db) und Florian Müller (git) ~ bei dem ausschließlich Songs von Thelonious Monk gespielt wurden ~ ist nun online und freut sich schon sehr auf Hörer:innen ///
~~> https://radiyan.uber.space/serendipity-spezial-featuring-jazzklub-14-ben-lehmann-florian-mueller-im-pierre-grasse/
featured musicians:
* Ben Lehmann - Double Bass
* Florian Müller - Guitar
* Ha
5 views
/// Weil im Frühling alles plötzlich ganz schnell geht freut sich "jazzklub" #11 ~ featuring Bastian Duncker am Alt-Saxophon ~ nun schon sehr auf Hörer:innen:
>>> https://radiyan.uber.space/serendipity-spezial-featuring-jazzklub-11-bastian-duncker-im-pierre-grasse/
featured musicians:
* Bastian Duncker - Alto Saxophone
* Albrecht Brandt - Double Bass
* Hannes Lingens - Drums
>>> https://hannesling
📊 Post engagement
Recent posts · likes + reposts
Feb 15latest
8
Avg engagement / post
4–5
Typical post (engagement)
2.2%
Engagement vs followers
50/100
Variable reach
Sep 2024
On Mastodon since
Half of recent posts land between 4 and 5 likes + reposts (median 5) — reach is spiky, driven by the occasional post that pops.
🔥 Top post: #silentsunday · 31 likes + reposts
📊 Activity & format
Posting cadence
0.75 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly images
Recent: 2 text · 10 image · 0 video.
Follower / following
0.2×
Follows 1.6K back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
🔥 Top post
#silentsunday
/// Der 15. "jazzklub", der am Vorabend der Eröffnung des 1. "A-Minor"-Festivals für Jazz und improvisierte Musik stattgefunden hat, ist nun online und freut sich auf Hörer:innen:
>>> https://radiyan.uber.space/serendipity-spezial-featurin…
/// Im Rahmen der Sendereihe "Ein Platz der Republik" war ich am vergangenen Samstag (30. Mai) mit Kolleg:innen von Radio Corax @RadioCORAX beim "Unordnungsamt" in Kalbe (Milde), in der schönen Altmark, zu Gast, um dort an der "Tagung im A…
/// "jazzklub #14" ~ featuring Ben Lehmann (db) und Florian Müller (git) ~ bei dem ausschließlich Songs von Thelonious Monk gespielt wurden ~ ist nun online und freut sich schon sehr auf Hörer:innen ///
~~> https://radiyan.uber.space/seren…
/// "jazzklub #12" ~ featuring Thomas Gruss am Tenor-Saxophon ~ machte im Juni 2025 das jazzige Dutzend voll, liegt nun zum Nachhören bereit & freut sich schon sehr auf Hörer:innen ///
>>> https://radiyan.uber.space/serendipity-spezial-fea…
/// Weil im Frühling alles plötzlich ganz schnell geht freut sich "jazzklub" #11 ~ featuring Bastian Duncker am Alt-Saxophon ~ nun schon sehr auf Hörer:innen:
>>> https://radiyan.uber.space/serendipity-spezial-featuring-jazzklub-11-bastian…
/// heute läuft 17.00 Uhr "jazzklub" #11 ~ featuring Bastian Duncker am Saxophon ~ in der neuesten Ausgabe von "Serendipity" ~ auf Radio Corax @RadioCORAX ~ lokal auf 95,9 MHz und im live-stream:
>>> https://streaming.fueralle.org/corax_19…
Frühling!
Spring!
Άνοιξη!
Dieser Zitronenfalter war heute so freundlich und geduldig, sich von mir fotographieren zu lassen. ✨
#photo #photography #nature #natur #schmetterling #butterfly #πεταλούδα #ανοιξη #fruehling #spring #flowers …
/// Ab heute freut sich "jazzklub" #10 ~ featuring Christopher Kunz am Saxophon ~ auf Hörer:innen:
>>> https://radiyan.uber.space/serendipity-spezial-featuring-jazzklub-10-christopher-kunz-im-pierre-grasse/
Auszug aus den Show-Notes:
Beim …
/// "Jazzklub #09" mit dem Trompeter Max Diller liegt nun zum Nachhören bereit.
Viel Vergnügen beim Hören und:
auf Wiederhören! ///
>>> https://radiyan.uber.space/serendipity-spezial-featuring-jazzklub-09-max-diller-im-pierre-grasse/
feat…
RE: https://jazztodon.com/@jazzkollektiv/115973909593604139
/// heute läuft 17.00 Uhr der leicht gekürzte Mitschnitt des 1. "jazzklubs" dieses Jahres in der aktuellen "Serendipity" auf @RadioCORAX
>>> https://streaming.fueralle.org/corax_1…
/// nach einer längeren Pause gibt's nun endlich wieder eine neue "Serendipity-Spezial"-Sendung - und zwar "Serendipity-Spezial featuring „Jazzklub“ #08 ~ Martin Hanisch & Claudius Stallbaum ~ im Pierre Grasse"
>>> https://radiyan.uber.spa…
🐘 Community & instance
Home server
defcon.social
Their home server on the fediverse — the instance a creator picks signals the community they belong to.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Sep 2024
An established account with real history on the platform.
💡 Facts
🗓️Joined Mastodon in 2024 — 2 years ago.
👁️Averages 8 views per post.
📤Posts about 0.8× per week.
🕵️ Fake follower check
Estimated70/100
Good
Credibility score
87%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 87% real, active audience · Low fake-follower risk.
- Engagement (~2.2% of followers engage each post) is around typical for Mastodon.
- Verified account.
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
serendipity /// radio /// in the air we share /// resident of the united interconnected distributed autonomous communities - u.i.d.a.c. - ⁂
„It‘s always night, or we wouldn‘t need light.“ - Thelonious Monk
profile picture shows me with pink hair and sunglasses - background picture shows a beach in Bulgaria with the Black Sea slightly tilted in order for the center stone to be upright.
#radio #jazz #experimental #music #society #culture #nature #humour #poetry #science #art #space #astronomy
📸 Gallery
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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