who sings the song that sounds similar to "time of the seasons"?  

even if you didn grow up in the 60s, you have probably heard the song "time of the seasons"at some point in popular media. some people think the acutal title is it is the time of the season which is the song main chorus line. and i heard another songs "things we said today", i only know the a song title but dunno the artist. they are very similar to each other, i just feel it but i cant find the common ways of both songs
can anyone tell me the song artist and also its similarity with "time of the seasons"

have a nice day^^