Karol XVII & MB Valence

Karol XVII & MB Valence is a Polish house duo composed of Karol XVII (Karol Samocki) and MB Valence (Marek Bigajski). The pair co-founded digital label Loco Records in 2007 and also records under the alias Jackspeare. Based in Poland, they have established themselves as house and deep house producers with releases spanning multiple labels.

Their sound encompasses deep house, house, and dance-pop territories, with releases distributed through Island Moods, Deepalma, and Get Physical Music. The duo produces music that sits within the soulful house spectrum, crafting tracks suitable for both dancefloor moments and deeper listening sessions. Their catalog demonstrates a consistent approach to house music production that balances melodic elements with rhythmic foundation, making their releases viable options for DJs working across house music's various subgenres.