"Sumatra Rain" again features Al Goz, this time on the Bamboo Flute, Guitar and with a poem in West-Sumatran Minang Language. The track is as relentless as it is bittersweet with its stumbling dark bass synth and the bell-like melody before the pads bring things to an almost orchestral end. In "Misty Mirror", it seems like Sneaker is speaking to his reflection in the mirror and trying to figure out what he is seeing there. Backed up by Sneaker's typical drum work, Slovakian singer Helena and Sneaker himself are dreaming of that mystical light. The "Java Island" side starts with "White Glow" where a serious percussion workout is blended together with the sharp electric guitar by Indonesian guitarist Al Goz. Compared to his Acid House-inspired "You Think You Think" which was featured on the Uncanny Valley 004 compilation, this four new tracks show another, rather dark, Pop and New Wave side of Sneaker. The Java / Sumatra EP evolved in large parts in Indonesia when Sneaker lived there for almost a year and it literally conveys the Indonesian heat to dance floors in the rest of the world. Further analysis suggests that the MJO phase 3 generates Kelvin waves propagating eastward along the coasts of Sumatra, Java, and Lesser Sunda Islands with phase speed ranging from 2.56 to 3.85 m/s.Sneaker's first solo EP for Uncanny Valley is a record of high humidity. The analysis results show that the intraseasonal oscillation SSHA along the coasts of Sumatra, Java, and Lesser Sunda Islands generally have a spectral peak at 91 days associated with the spectral peak of the MJO, except for Sunda Strait (61 days), southern coast of West Java (55 days), Sawu Sea (58 days), and Ombai Strait (100 days). In order to investigate the influences of MJO known as the intraseasonal oscillation (30–90 days), analysis of the data was carried out after 10–100 days band-pass filtering.
Kelvin wave propagation along the southern coasts of Sumatra, Java, and Lesser Sunda Islands generated by the Madden-Julian Oscillation (MJO) phase 3 (April 28 – May 6, 2004) has been studied by using sea surface height anomaly (SSHA) data simulated by a 1/8° global version of the HYbrid Coordinate Ocean Model (HYCOM), satellite-observed outgoing longwave radiation (OLR) data, and zonal wind data.
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