The Asampurna Melakarta (transliterated as Asaṃpūrṇa Mēḷakarta) scheme is the system of 72 ragas (musical scales) originally proposed in the 17th century by Venkatamakhin in his Chaturdanda Prakasikha. This proposal used scales with notes that do not conform to the sampurna raga system. Skipped notes or repeated notes, etc., were used in some of the ragas. Some of the ragas of any Melakarta system will use Vivadi swaras (discordant notes). The original system is supposed to avoid such ill-effects and was followed by the Muthuswami Dikshitar school. The naming of the original system followed Katapayadi system. Muthuswami Dikshitar's compositions use the name of these ragas in the lyrics of the songs and is still referred to by those names even in radio / TV announcements of these songs.