In 1999, NME readers named them 'best new band' in January (this despite the fact it was now three years since they released their debut album). In May, the single "Northern Lites" was released and made No. 11 in the charts. A dense production, with steel drums clattering out a calypso rhythm whilst Rhys sang an irreverent lyric about the El Nino-Southern Oscillation weather phenomenon, it was an apt taster for the new album, Guerrilla. Recorded at the Real World Studios, the album retained SFA's pop melodies but took a less guitar-centric approach to their execution and was their most experimental work to date. Layers of samples over brass, percussion and Gruff's melodic singing produced an album which took the freewheeling approach of 1960s groups such as The Beatles, The Beach Boys and The Velvet Underground and updated it to the late 1990s. The album swung from glam and garage rock numbers ("Night Vision", "The Teacher") to novelty techno ("Wherever I Lay My Phone (That's My Home)"), ambient indietronica ("Some Things Come From Nothing") and upbeat drum and bass ("The Door To This House Remains Open"). For the cover art, Pete Fowler created the band's first three-dimensional models, rather than the paintings he had supplied for the Radiator album and singles.  After playing several of the summer festivals, SFA released "Fire in My Heart", the most soulful track from Guerrilla, in August and saw it chart at No. 25. They then embarked on a US and UK tour. SFA finished their UK tour at the Cardiff International Arena in Cardiff, where they showcased the first ever concert in surround sound and broadcast it on the World Wide Web.  January 2000 involved a series of changes for SFA. The last single from Guerrilla, "Do or Die", was released and made No. 20. It was also the last single SFA released on Creation Records, as founder Alan McGee set off to pursue other interests. It had always been SFA's plan to release their next album on their own label, Placid Casual, as it would be a deliberate sidestep from their recent work: a largely acoustic album of Welsh language songs entitled Mwng. Meaning "mane", its lilting melodies established that SFA's songwriting did not have to fall back on head-spinning production tricks. A limited edition (of 3000) 7 inch record, "Ysbeidiau Heulog" (meaning "Sunny Intervals") preceded Mwng in May 2000. It came backed with "Charge", a hard-rock jam recorded as a Peel Session for the BBC. The album, released the same month, sold remarkably well for a non-English LP - it made No. 11 in the charts - and received a rare distinction for a pop record, being commended in Parliament for its efforts in keeping the Welsh language alive.  2000 also saw the Furries contribute two tracks, Free Now and Peter Blake 2000, for the Liverpool Sound Collage project, which was nominated for a Grammy. They undertook this remixing of unreleased Beatles recordings at the invitation of Paul McCartney, whom they had met at the NME Awards, where they had won Best Live Act.

Answer this question "was Mwng also one of their albums?" by extracting the answer from the text above.
a largely acoustic album of Welsh language songs entitled Mwng. Meaning "mane