Two comments
Re: Live in Oslo
The Humdingers was a Scandinavian band in the 90s. This live album was release in 1995 on Inter Music (INTCD025). I don’t know of any other recording by them.
Serge Grando: tenor banjo, mandolin, bouzouki
Svend Kjeldsen: bodhrán, percussion
Åsa Ringborg: fiddle
Jörgen Astner: accordion
Séamus Cahill: vocals, guitar
Special guest: Johannes Stærk (backing vocals on Those Memories)
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Séamus Cahill was the original singer in the Danish band Ash Plant, Svend Kjeldsen has played on numerous records, and Jörgen Astner is well-known in ITM circles throughout Scandinavia.
Re: Live in Oslo
Here you can see what the album really looks like: https://www.discogs.com/The-Humdingers-Live-In-Oslo/release/7718310
Not to be confused with “Humdinger” by Paul Brock and Enda Scahill, either!