Marlon Porto is an audio technician at Promaster studio (mixing and mastering) which he previously owned at PROSTUDIOS (a recording and mixing studio based in Teresina-Brazil in the early 2000s). He has been working in mixing and mastering services since 2014 and has some outstanding work at a national level such as: the mastering of ISMAEL TISO's EP - 2016, the mastering of the single by the band COMPASSO LUNNAR - MOLHOU/LAMPEJO, the mastering of the album by the band QUARTTETO SENTINELA - 2018, the mastering of the album by the band VALEDUATÉ - 2018, the mastering of the album by the singer CLAYTON PRÓSPERI - 2021, the mixing and mastering of the album by the band OCEANICO - 2021.  Promaster studio works with dedicated software for professional mastering and mixing and is also a blogger from the magazine Music and Market ( https://musicaemercado.org/ ).