I've had a bug up my butt about the stupidization of "The Fantasticks" for years. Details below, but first, go listen to at least a little bit of "My Girl." We'll get back to it shortly.
http://snipurl.com/rn6u6Some background is required; I'll try not to be too arcane.
Old-school composers had an assumption about the people who would perform their songs: that they'll figure out when to breathe. If you look at sheet music prior to the "songwriter era" that started in the 1960s, you'll notice that most of the melodies are written without rests, or with very few. Trained singers would know where to break phrases, and be capable of sustaining notes when necessary. This is all part of interpreting a song.
But over the years, as I understand it, the powers that be at "The Fantasticks" didn't want anybody interpreting anything. They wanted the songs to sound exactly the same from show to show, and from production to production. So sometime in the late 1980s I think it was, a revised vocal score was published, and suddenly the melody lines were full of rests. A mind-numbing number of rests. So that every incarnation of the show sounded the way it was "supposed to." (Side benefit: When untrained singers were cast, they wouldn't have any long phrases or sustained notes to butcher.)
The trouble with this is, the more you force phrasing on a singer, the more you kill her artistic soul. Turning singers into robots is a perverse act for a show that says stifling creativity ("plant a radish, get a radish") is a bad thing.
Somewhere along the way (the 2006 NYC revival?), something else changed. I haven't seen the current staging, but I did just finish playing a few days of auditions for an out of town company, and I presume the musical director's insistence on faster tempos was informed by that.
More arcana. Songs' arrangements get structured based on various elements. Instrumentation, key, tempo, style, atmosphere. And when you decide to change some of that after the fact, there are repercussions. I bet you still have that "My Girl" groove in your head. Okay, hear that bass line. Bom, ba da da da da, Bom, ba da da da da ... Great. Now speed it up 20%. Doesn't work at all, does it? If you want "My Girl" at that tempo, you need a whole new arrangement.
Maybe increasing the tempi of the songs was another compensation for incapable singers. Maybe somebody wanted the running time reduced. Maybe it's like with Igor Stravinsky, who famously conducted his compositions faster as he got older because, he explained, he got bored with them and wanted to get them over with. Whatever the cause, the effect is that the music I love is damaged, and this makes me sad.