The early single "Capital Radio" was re-recorded because the band learned that copies of the original Capital Radio EP were selling for high prices. "Capital Radio", later listed as "Capital Radio Two", is much longer, mainly because of a protracted outro.
The first single, "Capital Radio", was re-recorded because it was discovered that copies of the original EP were selling at high prices.  The later release, "Capital Radio Two," is longer due to a lengthy outro.