Conversation so far:
how did the horslips return?
Buoyed by this first public appearance in 24 years, Horslips returned to the studio.
Did they release any albums after the return?
Horslips returned to the studio in Westmeath to produce a studio album.
what album did they release?
"Horslips Unplugged".
were there other albums that they released?
CANNOTANSWER.
Did they play live after the return?
In December 2005, the band played in front of an invited audience for the recording of the RTE television program Other Voices.
What was a single from their album?
the album contained acoustic reworkings of many of their best-known songs.
did they do a tour?
a TG4 tribute show recorded and broadcast live on 25 March 2006 before a live invited studio audience.

Question: what kind of songs were there in the horslips unplugged?
Self-contained rewrite: what kind of songs were there in the horslips unplugged?