Sham-on forms.
Sham-on joins NESC RECORDS, an indies sublabel of NIPPON COLUMBIA.
Sham-on change their name to Shammon, leave NESC RECORDS, and sign to TOKUMA JAPAN COMMUNICATIONS.
Shammon leave TOKUMA JAPAN COMMUNICATIONS and go on a slight hiatus.
Shammon resume activities as an indies band.
Shammon disbands
Shammon revives.
Shammon go on a hiatus