ISRC
第五封信：友子 我真的很想你 啊，彩虹！
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The ISRC for “第五封信：友子 我真的很想你 啊，彩虹！” by 蔭山正彥 is TWB510859108. ISRCs are 12-character ISO 3901 identifiers that uniquely tag a specific sound recording — different masters, remixes, and live versions each receive a distinct ISRC. Released 2008-10-24.
TWB510859108 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “第五封信：友子 我真的很想你 啊，彩虹！” by 蔭山正彥. ISRCs are 12-character alphanumeric codes defined by ISO 3901, used globally by streaming platforms, record labels, and rights organizations to track plays and distribute royalties.
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The ISRC for “第五封信：友子 我真的很想你 啊，彩虹！” by 蔭山正彥 is TWB510859108. ISRCs are 12-character ISO 3901 identifiers that uniquely tag a specific sound recording — different masters, remixes, and live versions each receive a distinct ISRC. Released 2008-10-24.
